No, the rain venue will remain outside. However, it will be under a pavilion, so expect the same temperature as outside.
Partially! The open bar package includes bottled beer, house wines, and soda. The last hour of the reception will be a cash bar.
Yes! There will be a shuttle from the hotel to the venue prior to the wedding. There will also be a shuttle from the venue back to the hotel later in the evening. It will make multiple trips.