Disney World - What to bring

I'm going to Disney World in March with the family (wife and 2 4 year olds).  I'm looking for suggestions on what to bring to the park during the day and at night.

I have an EM-5.  Here are the options that I'm thinking about for the lenses:

1) Oly 14-150 + 25 1.4 (simple, rare lens changing but not the best IQ)

2) 14 2.5 + 25 1.4 + 45 1.8 (lightweight, best IQ, frequent lens changes)

3) 7-14 + 25 1.4 + 35-100 (best range (wide end), relatively big and heavy)

4) 12-35 + 35-100 (good IQ, less lens changes, I don't have 12-35, so I'll have to buy)

This is the first time that I'm going to Disney World, so I'm not really sure what to expect.  So, any suggestions/thoughts are welcome.