Yes it is one hour ahead from the East Coast.
No adaptors needed. The outlets are the same as the United States.
Yes there is WIFI in Bermuda at your hotel or at the Mid Ocean Club.
No there are no rentals cars in Bermuda.
The weather will be a low of 77 degrees and a high of 83 degrees. We are planning on lots of sun. Expect humidity in Bermuda.
The ocean is around 80 degrees in June.