Wow, this is the first thread I have read on the boards where everyone was so supportive. I should have come to this section a long time ago!
Both of my kids (DD 11 and DS 8) have ADHD. My daughter is a "quiet" hyperactive who really only has to make small movements with her hands, etc. My son is quite hyperactive in the traditional sense (jumping around, can't sit still, etc). Both have been on medication for several years. In fact, I had to literally beg the doctor to put DS on meds as soon as he turned six.
We are currently using short acting Ritalin (4 hr). We tried the all day meds, but also had the problems of no appetite and sleeplessness. With the short acting, we have much better control of when they are hungry (can actually time it for lunch and dinner), and to make sure they are tired at night. The downside is a trip to the nurse everyday during school.
My DH is also ADD (not hyperactive). He takes Strattera and it works well for him. However, it doesn't work for DD.
The original question here was whether or not to take a meds break. IMHO, absolutely NOT! First, we didn't want to send them a signal that this was something they could really function well without. They can't. Secondly, we are so much more relaxed when everyone is in control of themselves. There is much less arguing, etc. Everyone gets to enjoy themselves much more since the level of tension is so much lower. Even if I thought they would enjoy being off the meds (which they don't), DH and I could never relax and just enjoy being with them. That goes for at home, and especially at WDW!
Again, thanks for the support out here. It's refreshing to realize you are not alone dealing with these issues!