If your are going to return to the UK via ORD, you should be able to complete an Enrollment on Arrival interview while clearing US immigration at the YYZ pre-clearance facility.

Please refer to the Enrollment on Arrival thread.

If flying YYZ-ORD, then you should be looking to complete GE interview at YYZ not ORD because you will clear US immigration/customs formalities before boarding YYZ-ORD; you will arrive into ORD as if you flew a US domestic flight into ORD. You will need to inform CBP officer at YYZ you want to complete "GE Enrollment on Arrival."

I'm guessing it's best to arrive in plenty of time at YYZ in that case, to give me as much time as needed for the interview process?

Walk in - ORD or Chicago (Canal Street)
 

Spoke to a rep at the Canal St location, said they do not take walk ins at Canal or ORD. Any recent experiences?

I have scheduled interviews at San Antonio for 12PM, but would like to do it earlier. Are enrollment centers more flexible with walk-ins if you have an interview at the same place later in the day?

Any recent experiences with walk-in at DFW?

Tried at DFW and no luck. Anyone know about SAT?

Hello,
I have been scheduled for an interview in two weeks. It's about a two-hour drive for me. My toddler just got conditional approval, but I couldn't find availability for him. Is it okay if I just take him along? Is it possible that they would interview him? Any DP would be greatly appreciated.
Thank you.

Walk ins at JFK - terminal 4?
 

Is it terminal 4 at JFK that we should go to for an attempt at a walk in interview?

We fly out from terminal 7 but I assume that Global Entry interviews at terminal 7 are only for arriving passengers.

YMMV. Someone on FT did report success while my spouse had an interview back in July and overhead another party attempting to do the same (another person trying to piggyback on top of an existing appointment) and was turned away. Speculating YMMV as it could come down to individual CBP/CBSA officer and/or any no-shows etc (eg even at a given location with a success data point, it could still be YMMV).

So if you don't bring toddler, the answer is 100% no. If you do bring the toddler, it is a maybe.

Just wondering if anyone has done a walk-in recently at SFO. Is it still 7am / 3pm? How was the experience?

Correct. On the ground floor walk with international arrivals on your left and it’s on your left just before the corridor space that leads to the escalators.

I'll add my wife's experience at San Diego, Otay Mesa Enrollment Center just for informational reasons. Both my wife and 9 y/o daughter are Conditionally Approved and I got appointments for them 2 weeks apart. Not possible to get same day appointments any time soon. Since my wife must attend her minor daughter's interview anyway, we figured schedule daughter first and ask to piggyback mom's interview at the same time. No beuno. 9 year old daughter was approved, and mom was told she must return again next week for her own interview at her previously scheduled time.

Thanks. We actually called the office on the day in question and were told that they would never accept walk ins, only people who had an appointment or were arriving on an International flight.
Will have to look at another trip to the US before our conditional approval runs out.

Just to confirm the above. I came into JFK T5 on JetBlue and with a 4 hour layover I tried my luck at the enrolment center. No chance. Place was dead. Thought about making a smart ... remark but declined.

I have plenty of time but slightly annoyed that I could have just taken the airside shuttle from T5 to T8.

Anyone here recently tried to walk-in at HNL by any chance?