This is a relatively small church, though beautiful, so my only warning is that there is not much room to just hang out before the ceremony. There is also a preservation fee, since this is now the National Shrine of Our Lady of Walsingham. It was a wonderful place for our wedding, and we highly recommend it. It is a Catholic church, and so it is unlikely that non-catholic weddings will be allowed. It may be possible to have the reception there as well, but we did not.

Old St. Bede's Chapel is the old chuch which is located on the campus of William and Mary. While it is only officially used on Sundays for service for the students on campus, St. Bede's is very protective of its use. They have a pretty strict rule that it is only available to W&M grads, and members of St. Bede's Parish.
The venue is old, and quaint, and reminiscent of a small New England Church. It was perfect. We had approximately 150 guests, and there was plenty of room for everyone.