That's some definite thought. It just also occurred to me that while this planning is so important, don't future trip! Meaning, you can change pieces of this - like stay in a different hotel so you aren't literally in the building with the bar they have avail - and so on. You're not going TODAY so each piece of your decision can be made (is being made) but like you could reserve the right to say no - making some change during the event for something that throws you off the plan is OK too.
I'd say keep your phone handy for lots of reasons. I play a lot of DOTS on my phone on agitated days at this point in my sobriety
