My recommended "to bring" list based on my personal experience:
-small day pack or tote
-water bottle
-small cash bills in JA (though I do believe I was able to use US at all of the bars- small bills are always best so the bar tender doesn't have to worry about making change IMO)
-small roll of toilet paper or wipes
-bug spray or wipes
-beer coozies and/or 8-12 oz insulated cup/mug with reusable straw (-plastic cup sized so you don't have to mess with the plastic waste)
-camera
-tip money for the driver
-cash for a snack and beverage at Dru's @ WAVZ
it doesn't hurt to brush up on your domino skills, either!
Just some things I've been glad to have handy on my trips "the other way"