I agree there is no rule against multiple entries, but there have been reports here of people being told that they could only enter FFD once.

Data Points:
Yours truly was initially denied AC access (standing in for FL/FD) at MIA on Saturday on the 77W LAX-MIA. Ticket was FF LAX-MIA x on to BOS. Was told that the AC is a "Day of Departure Lounge," and that my onward connection did not change the fact that I was an Arriving Passenger. He told me that "You must be on separate reservations then." (I showed him that I was not, ticket numbers and locators were the same.) Also, I have accessed the FL many times on arrival, but it sounds like from the above posts, this has become clamped as of recently.
He laughed when I suggested it might be a technical glitch.

He conferred with the other two agents, who confirmed that the lounge was Departure Only and that I did not have access, but they ultimately ended up making an exception and letting me in, due to my "situation." (ankle injury)

A bit later, my buddy (same first flight, also connecting through) showed up in the lounge and said he got in with no problem at all. Shortly after that, one of the agents from downstairs (not the guy that denied me) came up and apologized up and down, saying that I should have had access all along, and that this had resulted in a call with the supervisor, who confirmed that through pax have access.

Was glad to be able to complete my 'Krug Pilgramage!'

AA could save themselves a lot of grief and calls if they cited some simple examples to help agents and passengers understand the rules. While there will always be outliers, 3 to 4 examples probably cover 95% of the situations that are in question. Or update the wording to be specific. ( i.e. You get FL/FFD access before and after your qualifying flight if you have an onward ticket.)

Same exact thing happened to me 3 months ago at Admirals and in MIA also. 3 diff agents told me I cant go in to the lounge upon arriving on the 77W flight from La. They actually said something about its been more than 4 hours... That made no sense and wasnt accurate as the plane had just arrived. However, it was that 4 hour comment that triggered my concern and eventual post above in regards to time you can be in the lounge.

Even after I told them I just landed they still refused. They also sent away another guy and his Gf who were behind me. I stayed and argued (nicely) and then was let in and got the same apology it sounds like you got. Was able to run out and get the guy and his Gf and tell them they can come in also.

Pretty pathetic really that the agents are so clueless or just dont care or maybe choose to be difficult. I fly next month same flight to Mia and need to access the lounge upon arriving, hoping for a more smooth entry process.

Yes! Or even just train the employees in what the rules are, rather than tell them to go by whatever "the computer" says, and invent excuses should it beep red. He even said more or less exactly: "If you were allowed in, the computer would say so."

Wow, we had very parallel experiences then! I sense a theme emerging. Definitely read some other things on other threads too. 4 hour rule is a new one for me: It sounds similar to what I got. A random potential reason announced without even checking the BPs to see if said reason is even true.

Yes I felt like it was pretty random and so wrong on 2 levels. I mean I had just landed and clearly stated that not to mention they could see my BP. The 4 hour thing though isnt even a rule in any situation. If I want to stay in FL for 8 hours I can. I mean I have never seen someone coming around checking the time you came and what time it is and warning you to leave. I do have a trip for end of the year where I am hoping to use FFD for breakfast and then also for lunch, but I now it was indicated here that some FT members have said they discourage multiple entries to the FFD part. I'm hoping to get around that.

At any rate, with you experiencing this same thing and me having 3 diff people same the same thing clearly there is no proper training at this lounge. They just dont care or are clueless. Pretty bad.

I've searched through this thread but I'm still not certain about something. I'll fly from RNO > LAX > JFK (in the Flagship First cabin for the transcontinental flight) on a red eye that lands at JFK the following morning. Then I'll have a connecting flight to DCA on the day my flight lands at JFK, but it'll be on another ticket/PNR (I hope to call and have an agent "link" the two PNRs, but I don't know if that's possible). Will I get access to the Flagship First lounge at JFK, but not get access to Flagship First Dining at JFK? Thank you!

Your access to FL Vs. FFD would not be differentiated here. Your arriving BP from the FF Transcon gets you into FL/FFD upon arrival. You can have access to both until your DCA flight. However, if you leave maybe tell the desk you are leaving and will be back. Or when you come back just obviously show the BP from the arrival. Additionally, I have heard some people say FFD is meant for 1 meal but not to leave and return but in theory you can go take a stroll of the terminal and still come back to FFD. You should be good to go for both.

However, unless I've missed something FL is closed. Just still being used as Admirals overflow. And even if its open FFD is def. not open yet.

A consideration for 2022:

At this time, I mostly fly AA domestic and always in premium cabin. If I credit to BA next year to obtain Sapphire or Emerald status, will that give me Flagship Lounge access on my 100% domestic AA itineraries? All AA itineraries?

I will easily meet the 4 required BA segments due to international travels.

Sounds like a win for access.

Also, has AA published any concrete data on the reopening of the Flagship Lounge services?

Yes, if you have oneworld Emerald or Sapphire status in any other program besides AA, then you would get Flagship Lounge access on any AA itineraries, including 100% domestic. This is probably the biggest benefit of crediting to another oneworld program like BA for a US based flier.

And AA hasn't published anything regarding Flagship Lounges reopening, anything out there is pure speculation.

Just to clarify for future reference, *besides AA and AS.

Thank you both Safari & Jeffrey for clarifications.

The Points Guy / TPG has posted Flagship Lounges will begin reopening in September, starting with MIA (see separate thread).

AA has also hinted Flagship Lounge access rules will have some changes as well.

link

“More ways to access the FL” doesn’t sound like good news to me. With the addition of J passengers getting FL access in the last decade I’d say they’re plenty busy as is (normally of course).

They meddled around with Latin America flights no longer qualifying for FL access for AA Elites or Premium cabin, so maybe they are reversing the decision? Purely speculation.