I took L1 in “Boston” last December. It wasn’t actually at the convention center like the June exam, instead it was at some random event hall in Foxboro. I assume they do this since it’s not worth it to book a huge venue like the convention center for so few candidates.
Having to go out to the suburbs sucked since it wasn’t T/cab accessible and there weren’t convenient spots to relax/eat during the break. I ended up spending the lunch break in my car, blasting my heater so I wouldn’t freeze.
I don’t know if they are doing the same this year for the December exam though.