if you are planning to hit a park definitely on the 1st night, then drop PF that night. However, if you think you are going to be running late/delayed, and not go to the park, then keep it and drop the one on the last day.
Can you keep both and cancel that day in the event you are unexpectedly delayed and it doesn't pay for you to go the park the 1st night? Are you staying at GF?