Have I made a mistake?

I've booked to go DLP with my family and we're planning on visiting the parks on 9th and 10th July.

After reading the comments on this page I'm worried that we've made a huge mistake as the French school holidays start that week.

I was prepared for some long wait times anyway but it sounds like it will be worse than I imagined.

Does anyone have any advice as to how we could get the best out of our holiday?

Kids are 3 and 4 so won't be bothered about the big rides but they will want to go on the Buzz Lightyear and things like that.

Thanks.