The crowds were pretty good last year the first week of May. It is just past spring breaks. 30 mins or less. We did fast passes on the big rides. But some of them had 10 min waits. Not to bad. BUT the biggest problem you will have is GRAD NIGHT. You need to ask some of the veterans around here but I think that is the first weekend in May. They close the parks early and bus all the local seniors in for a big party. We went last year we stayed off site thurs, fri sat. Just to relax. We didn't got to the parks till Sunday. We went over to WL for dinner on Sat evening. It was Grad night. When we left dinner we could not believe all the busses going into the MK bus after bus after bus. We waited forever at one of the traffic lights. The police were running traffic. I just thought you might want to research grad night. We went over to the BC and stayed for 5 days then went on the cruise. The crowds were very good. We had no problems at all. The weather was great too. Warm but the humidity was very low. We really liked May. Hope this helps