My suggestion would be to make a few ADRs as well. Maybe you can have each member of your party pick a favorite restaurant to book. The down side: if you book an ADR at a park, you might spend the majority of your day at that park. (You can even look at the EMH calendar and decide which park will be better for you each day.) For my family, I have booked a few 8pm dinners at the resorts, so I am free to go to any park that day. Besides, I figure that I get to enjoy the other resort's views, shops, etc. I am hoping to catch the electric water parade one evening just to slow things down.
Remember, you can always cancel. Better to be safe than sorry. Good Luck.