That is my plan if I start hearing party voices in my head! Also bringing a huge ice tea with me for after work. I know a lot of my drinking was fueled by habit and having a substitute will help.
Having a plan is a great idea, sounds like you've thought the different scenarios through and have prepaired well .
My first time in a british boozer after 6 months sober was a bit of a test. At 11:30am when a group of us went in for a colleauges' leaving lunch there were a few old red eye's having a morning drink . We asked one to take a photo of us and his hands were shaking so bad .. sometimes you can just tell when you see someone that they got it bad .. certainly a sober reminder if i needed it .
M