We just got back from a 17 day trip. We were in a park every day, but some days were shorter than others. We had a few days where we only were in a park for 3 or 4 hours, then either went and chilled at a water park, or went back to our townhouse and relaxed. Some days we hopped from one park to another. We had some early days, some later nights. What we typically do is have a rough plan sketched out in advance of the trip, so that we can book our FP+ in advance. So even for a trip as long as ours, we had all 17 days mapped out. However, we know that there's going to be some flexibility and on-the-fly alterations to the plan. I'd say we stick to about 70% of what we plan, then the rest is done based on how tired we are, how the weather is, etc...
This trip we didn't so a single rope drop, except for one water park day, and we still got to do everything we wanted.