Thanks everyone!

I'm leaning towards just packing in small tote bags (we'll only be there 3 days). When I was there in September for 3 days, I just packed a large Victorias Secret bag and it fit in the Universal lockers but I thought I'd see if anyone had other knowledge since I'd only been there that once.

The rental car is a great idea - I'm just not sure I wanna spend the extra time picking it up and dropping off since it'll be a short day in the park anyhow. Opens at 9 am. Our flight is at 6:58 pm so we'd need to be there around 5:30. At least with a cab, once we're dropped off that's it. No waiting or paperwork to account for.