Personally I subscribe to the "if you want to go purchase the ticket in advance" club. You can get a
AAA, DVC, or Annual Passholder discount on each ticket you purchase and they will hold them at the box office for you.
We attended this about two years ago - went to the morning session - and really enjoyed it. They had a traditional breakfast buffet and an omlete station and then had another buffet with more dinner type items including things like shrimp, carving station, vegetables and other things I just can't remember. There was also a dessert station.
You can visit HoB's website and pull up their Sunday brunch menu to get a better idea of what they offer.
And while gospel music isn't really our thing, the performance that we saw that day was amazing - it was really an energizing and uplifting show.