Yes. We get there early, ride as much as we can, maybe see a show, eat lunch, then head out. If it's cooler season and we were going to MK after, we may try to make them in the early afternoon and get more. But, if it's hot or we're going to another park 3 rides (plus the ones in the AM) are pretty much enough for us. We just then take it easy, eat a sit down dinner, and play it by ear from there (actually didn't try to get more FPs). We always try to see a night firework show too.
We were just there in February and the weather was perfect. When going to AM EMH then another park we had our FPs starting at the earliest 2 I believe. Since it was nice we didn't go back the the resort, just rode what we wanted that didn't have a long line (which is much harder during busy times).
edited to add:
This works for us because we recently started trying to go every couple years. We go to the parks for 5 or 6 days, and don't do anything else others do while there (ie Universal, Sea world,
legoland, etc). If this was a once in a lifetime trip, or we were only there for 3 or 4 days, I'd change my plans a little. I'd most likely make FP for the afternoon, try to get more, and try to ride as much as we could each day. I'd say if you have 5 or more days, you'll have enough time to see plenty that you won't have to rush from open to close (IMO).