Sucking, and protection

[QUICKEE]

Ive been wanting to go to APV and sucks some cock- never done a gh before. But the thought really gets me going. Im wanting to warmup on 2-3 nice cocks, then Id like to put some condoms in the booth next to mine, and stick my ass to the hole. Hopefully I could get 2-3 7" + cocks in my ass.
Whats the chance that the john's use the condoms? Is there a better way to go about this?
And this question is for those that have been to APV in everett, are there booths with different height holes? im short, so needing a hole that isnt too high.
Any tips appreciated, this has been a fantasy of mine. been thinking of it more and more.