Yes! Please RSVP here on the website to let us know which events you will make it to.
The bride and groom have decided to not provide alcoholic beverages at any of the events. The venue does allow alcoholic beverages on the premises so guests are welcome to bring their own drinks if they so desire.
Yes, the temple sealing requires a temple recommend to enable entry. If you do not have a temple recommend, you are more than welcome to wait outside on the temple grounds for the bride and groom to exit.
The short and sweet answer is talk to your local bishop of the Church of Jesus Christ of Latter Day Saints. He will have more information regarding temples and temple recommends.