I have a personal fan that you wear around your neck. It's about the size/shape of an iPhone, and the fan blows out of the top. You wear it like a necklace and it blows air up onto your face and neck. I think this works better than the misting fans, and it is hands free!
We also do frozen washcloths. It's a little complicated to explain, but here goes: Go to the Dollar Store and buy an insulated lunch bag. (I have one that would probably hold 2 sandwiches, not much bigger and it folds down flat in my suitcase). Bring several wash cloths (or use the hotel's) and some sandwich-sized ziplock baggies. Each night, wet the washcloths and wring them out a tad; you want them wet, but not soggy. Fold in quarters, put one in each baggie, and freeze them overnight. The next morning, pack them in the insulated lunch bag. I found they would stay very cold until around 2pm in June, and if I put a little baggie of ice cubes in there, they'll stay cold even longer. It feels WONDERFUL to wipe your neck, arms, and face with an ice cold washcloth in the middle of a hot summer afternoon!
We can't drink enough water to stay hydrated; everyone starts to feel bloated. I bring flavored drink powder in sticks to add to the water. We can drink more that way; somehow nobody feels as "bloaty" when the water is flavored.