My nephew's baseball team went to Disney for a tournament at WWOS the week of July 4th last summer and my parents and I went along. I was absolutely dreading it!! I kept thinking that the crowds and heat would be so overwhelming that we wouldn't get to do anything fun. However, we managed to have a great trip, even with heavy rain for 4 of the 8 days. The only time I was completely overwhelmed with the crowd was at Downtown Disney on that Friday night. Even with those outrageous crowds, we only waited 20 minutes at T-Rex using the Landry Rewards priority seating (no reservation). Of course that was with the old Fast Pass system, so I have no idea how FP+ might affect a trip. I would think that if you plan ahead using the crowd predictors and follow all the great tips on here, you will still have a great time. In my opinion, a July trip to Disney is better than no trip to Disney.