[MENTION=163853]JapanFlyerT[/MENTION] Data point for you. My wife got Conditional Approval on 2/22, I logged in and scheduled her appointment then. The closest available at that time was 9/15, so that's when she is scheduled.

Get this, I just logged her on to check appointment availability and it shows DEN as being "Fully Booked" and no available dates. I looked a couple of weeks ago and they were well into October already.

Myself, I got lucky. I got my CA on 2/22 also and had my appointment for 9/15. Within minutes I tried to reschedule and found an opening for 4/5! Got the interview done yesterday and DEN and was painless.

**I can confirm that there were signs posted that walk-in interviews are NOT accepted due to high volume of applications. Only existing GE members for account updates are accepted as walk-in.**

Thanks for the info [MENTION=846890]madmike283[/MENTION]

That is what I needed to hear, although I was hoping for someone to say Sept was wide open at the moment. I may end up in LA for a couple days as well which might increase my chances.

Moderator's Note:
 

[MENTION=163853]JapanFlyerT[/MENTION],

I moved your question about how long it takes to get a conditional approval to the following thread:
TWA884
Travel Safety/Security co-moderator

San Diego Intl airport showing mid to end of June OPEN

Was just able to snag an LAX appt for this week (13th) -

Appoitment Availability
 

A friend who lives in NYC tried to get an appointment in early May at JFK and nothing was available. She then looked at Boston, DC, Baltimore and Philadelphia same story.
However MIA was totally open and she got an appointment for this week? Why so much availability at MIA?

Not as many applicants.

If your friend logs into her GOES account and do a new search several times a day, she will find something much closer in a week or less.

Even with it presently showing no availability at all?

Yes, cancellation happens all the time and data is live. Thus available interview slots change constantly, best time to check is when your interested Global Entry office is open. This was how many of us got a much closer-in interview slot. Please note there are two locations in NYC; one in JFK and another in downtown.

Please come back and let us know what she fines.

Thanks. Will do

If you see NOTHING and are getting close to cut off to book - book anything you can where you are willing to do a cheap Southwest or other flight to do the appt (don't book the air yet though) - then keep trying to get a closer in local appt. Pretty much assure you if you look every 2-3 hours when centers are open you will see closer in dates appear as prior poster suggested. These are cancels or walk in's or consolidates for multiple people where the user is now interviewed and the original interview opens up right away

Thanks for all the advice. Just spoke with her and she is keeping the earlier MIA appointment since she planned to be down there anyway

In that case, it is a no brainer. MIA is also great for cruise passengers.

I agree it's great for cruise passengers that's why I am so surprised the availability is so wide open at MIA!!!

Maybe they do not know. Most people think of center/s near where they live.

May not help a lot of us, but as of this morning MCI has a lot of openings on Saturdays and Sundays in May. They didn't have these yesterday.

Update: As kklems pointed out, this could be an error in the calendar, as the Customs web site shows MCI only open Tues-Thr. After reading other posts in this thread, I would not book on these days.

Update #2 : Agent at MCI on 4/18 confirmed the Saturday and Sunday interview times in May are accurate. You can sign up without worry (and I did!)