With my children, we have visited 3 times, with a 4th visit in 19 days!
I have three children.
Visit 1: DS 3.5; DS 5 months
Visit 2: DS 6.5; DS 3.5
Visit 3: DS 7.5; DS 4.5 Me: 5 months pregnant
Upcoming visit 4: DS 10 DS 7 DD 2.5
You can only judge how your child/ren will be on such a trip.
I plan appropriately. We do not park hop. We visit one park one time during the visit, therefore having days off for rest. However, we were able to add some days to this visit and we are repeating 2 parks. We have never made a rope drop, but hope to for DHS (Star Wars Weekend). We laugh and giggle during our visit. I am quick to point out something interesting when a whine comes on. I pack simple snacks (raisins, applesauce cups, bananas, goldfish crackers, pop-tarts, etc.) and never refuse an ice cream treat. That ice cream really really helps!
My kids have seen visions they would otherwise never see. Do they remember all things, no. But who can anyways? In fact there are attractions and shows we have not attended. We can not do it all when we do not hop or do not visit any park more than once during our visits.
We have always had fun visits that were well planned with low expectations.