My 1st tour was Boston New England and New York in September 2006...as Julia has said go for comfort, and I go for layers so I can layer on and layer off depending of the temperature, don't forget the coaches can get chilly with the Air con, I always travel with a light fleece and light jacket, pair of gloves and pashmina type scarf...so I can dress for most things!!!!!
I have just returned last month from the Florida tour and I didn't even pack a dress, just smart casual and comfy.
yes take $ USD and $ CAN dollars, and credit cards......
Cindy