We went EVERY NIGHT just about on our HM, since we could stumble back to our hotel (BC)....we were in WDW for 7 nights (then went to Vegas for the rest of our HM)
ANYWAY, it was ALWAYS a GREAT TIME!!!!!! Thursday - Sunday were the BEST...but during the week..it was still fun, just less crowded! We went in September!
And I agree, get there later, gives more people time to get drunk..and become more fun!!!