Hi. We now go the beginning of October, the full week leading up to Columbus Day Monday (my kids here in NC have Race Week off school). Before that we always went the full week before Thanksgiving and we've also gone a few times in the Spring. Crowdwise, October is in the middle of the two. November was quiet and March/April was crazy busy. The beginning of October is great. We've had weather in mid 80's to swim and the lines aren't long at all, the longest for the 'big' rides like Space Mountain, etc. maybe 30 minutes, sometimes less. It got busier the second weekend leading up to Columbus Day, but not horrible. Good luck deciding!