We went last year the second week of June because we didn't want to take our DD out of school either. I will say it was very HOT and HUMID!! we were told it was hotter and more humid than normal. The crowds got worse later in the week but were still very manageable. We used a good touring plan and didn't wait in long lines, we got up every morning and were at each park at rope drop and did everything we wanted before the afternoon. We did take breaks every afternoon to go to the pool and relax. There was rain in the afternoons but only short storms that didn't bother us, we just on our ponchos and kept going. My DH did get heat exhaustion, so I recommend lots of fluids, I kept telling him to drink and he said he was fine. We had a great time and were glad we went, my DH and DD are huge Star Wars fans and they LOVED Star Wars weekends. We went to Blizzard Beach one day and it was not too crowed early in the day. We did go when they opened and stayed until mid afternoon - it did get very busy by the time we left and at that point people were searching for seats. But in the morning there were very little lines - I think the longest we waited for any slide was 10 minutes. Have a wonderful trip!