We are going to Disney for our first summer trip in a few months and this has impacted touring and planning.
Packing - looser fitting clothes with the t-shirts that do not have a heavy iron-on. Extra sneakers and socks to be changed as often as possible. Sandals and ponchos for the rain. Something to put around the neck and/or cover ears from extended sun exposure.
Touring - we are Rope Drop folks, so that was no change for us. But we did consider morning Extra Magic Hours for this trip. Also, we are knowingly avoiding some things where standing/sitting outside for an extended period would be expected. For instance, we have more ADR's for lunch to avoid places like Flame Tree & Sleepy Hollow, and skipping Beauty & the Beast along with Flights of Wonder performances, or avoid waiting on lines at attractions like Tomorrowland Speedway. Conversely, going to a few extra indoor attractions that we might sometimes skip like 3-D movies or Animatronics. Also, the expectation is to enjoy the hotel swimming pool more in the early evenings and avoiding late meals (since we're eating bigger lunches) and likely spend fewer evenings Park Hopping (although, I understand why so many people head back after dark).
In general, we plan on exiting the Parks a bit earlier and just moving slower - that means instead of doing, let's say 16 things in 4 hours of Park touring, we'll maybe do 14 things.
Lastly, think about those FP+ - waiting inside an air conditioned Space Mountain for 45 minutes is not the same as waiting at fan-blowing Big Thunder Mountain for 45 minutes, particularly if you expect to be in the Parks mid-afternoon. Similarly, Buzz Lightyear versus Speedway - FP for Speedway makes more sense if you plan on doing both. Also, it might seem like a good idea to wait outside for Little Mermaid or Disney Jr. shows, but standing inside an air conditioned room waiting for Toy Story Mania for an hour might not seem so bad after all.
