I would take all of your supplements while you are there. I would drink hard alcohol instead of beer or wine, beer or wine will greatly benefit the yeast.
The most important thing would be to get a high strength probiotic while you are there (100+ billion cfu per capsule) and this should mostly keep any setback at bay.
If you want to feel good while cheating I would focus on your liver and giving it some milk thistle or other herbs (such as teas). I am unsure whether molybdenum is necessary or not because I haven’t taken it before.
The probiotics should last pretty good without refrigeration for 24 hours or so.