How many people are in your group and what are the ages? If you aren't a huge group and car seats aren't involved, you might consider Uber/Lyft for drop off/pick up to the parks. Parking will be $20/day plus the extra time for getting to and into the lot, finding a space, going through security, etc. If Uber/Lyft won't be much more than the parking fee, it might be worth the convenience and time saving. You can be dropped off at the Harbor drop off lot or at the DTD lot.