My gym is part of a franchise whose annual corporate meeting is tomorrow in Boston at a hotel. It’s a full day event from 8:30-5:00. I’ve been to the same event the past two years and know what to expect – a lot of sitting. My boss is happy I am going and supports my leaving early if I can’t make it through… I want to bring an ice pack with me but I don’t know how to keep it cold enough…think I should just buy a bag of ice from the hotel when I get there..?