Have contacted one of the Sister's and asked questions about touring/photographing the inside of the Basilica. She encouraged a tour first, then take photos after. Tripods and flashes are welcome, though she asked for no flash photos of the mosaics (hotspots will magically appear on your photos). They request a $2.00 donation from each person and the tour will take about an hour.
Have scheduled this for the afternoon as I have a dog show at Purina Farms in the morning. :) Hope to see you all there!