My biggest tips would be:
For race strategy -
1. Walk the 5K. This race isn't timed so go as slow as you want to (within reason, of course). Take the photos and have fun.
2. Do the 10K as easy as you can without getting in trouble with the balloon ladies. Have fun, but not too much fun. Immediately after you finish, go into recovery mode. Get some food, re-hydrate (it's likely to be hot and humid so drink, drink, and drink some more), and get off your feet as soon as you can.
In general -
- Respect what you are doing. My friend/travel partner says that, when I'm doing a challenge, it is a running weekend with a side of vacation until I'm finished running. That means that what I need to do to feel good about running takes priority. If that means skipping the standing in long ride lines or not eating my favorite rich dessert or being in bed at 7 p.m., so be it.
- Do some back to back to back days in training. There are things that happen to your body when doing multiple days in a row and you don't want to have them pop up for the first time on race weekend.
- Have a plan for everything going into the weekend and stick with that plan. It's very easy to get distracted by things at Disney and suddenly find yourself doing something that you didn't do in training. Repeat after me "nothing new on race day." But that being said, don't be afraid to throw that plan out if it isn't working for you. At least twice on race weekends, I've found myself telling my travel partner, after two hours of park time, that I was done and going to head back to the hotel room.
I hope this helps!