I bring far more lenses with me than I bring for any single park day - generally, I'll have 15 lenses on the trip, for 2 camera bodies. But the most I would bring to a park for a day would be 2 camera bodies with 5 lenses.
A typical park lens kit for each park would be:
DHS - 10-18mm, 18-55mm, and 35mm F1.8.
Magic Kingdom - 18-250mm, 10-18mm, 18-55mm, 35mm F1.8, 40mm F1.8
Epcot - 55-210mm, 18-55mm, 10-18mm, 35mm F1.8
Animal Kingdom - 70-200mm F4 or 300mm F4 or 150-600mm, plus 10-18mm and 18-250mm
I have duplicates of most lenses, since I have one for my DSLR and one for my mirrorless - this lets me decide if I should bring more wide and fast lenses for the mirrorless, and more long focals for the DSLR, or a travel-zoom for one and more primes for the other, on days that I bring both cameras.