One week trip planning Q’s

Planning a one week trip to Okinawa in mid June. We (2ppl) would like to stay in Naha, Chatan, somewhere up north and also one of the Kerama Islands. I have a few questions:

  1. Is this too many places to stay in just one week? I know this sounds contradictory but we would like to explore as many things/places as possible without feeling too rushed

  2. Will there still be fireworks on a Saturday night in American Village? Does it also run on a Friday night? If so, are they even worth planning an evening around?

  3. Best car rental in Naha? Planning to rent a compact car for 5 days. Also are Google Maps travel times realistic?

  4. It will be rainy season, how many rainy days to expect? Any recommended indoor activities as a backup for yucky weather?

Ty!

by pina-banana