We hear all the time about how summer is a terrible time to visit: too crowded, too hot. Well, here are mitigating factors, espeically for families with school-age children or teachers in the group, who can't get there at other times of year. Plainly put: Over the summer, ALL the lines are open, ALL the attractions are operating, ALL the buses are running, ALL the parks are open much longer than in other times of the year. We went in September once and were dismayed we had to leave MK every day at 6 p.m. to go to Epcot; we missed seeing MK at dusk and in the nighttime, and we also noticed half the food lines were often closed, and some queues were even shut down, like one side of Pirates. If you can deal with the heat -- lots of breaks, plenty of water, hats and sunscreen -- and the crowds -- use FP well, and be flexible in your touring -- summer is a great time to visit.