I doubt they'll care, the Americans are over friendly in just about every restaurant in WDW.
Top tips from me:
Spend more time at Animal Kingdom than you'd perhaps think to. Make sure you go up to Rafikis planet watch, see the vet sessions, see the llama's up close. It makes the park a lot more personal. See the Safari multiple times at different day parts - you'll see a lot more variety. Make sure to see Festival of the Lion King - spectacular show. Park empties the later in the day it gets. 1 hour before park close, everything will be walk on. So don't wait in huge lines all day.
Epcot - Lots more than meets the eye, Living with the Land is good but often overlooked, as is Journey into Energy. I enjoy both. Soarin can't be beat as a ride. Fastpass it and Testtrack on different days.
MK - enjoy. You'll have sore feet though. If your there multiple times, watch the wishes fireworks from behind the castle at the carousel, makes it a different show. Carousel of progress is often overlooked and very good. Don't miss the Main Street electrical parade.
Hollywood Studios - don't miss Fantasmic. Seriously one of Disney's top 3 shows worldwide. www.easywdw.com
- check down the side for the time period your there, follow his guidance, man is a legend.