My husband and I did the virtual, you put a lot of air in you. We did the pumping ourselves but at a certain time they can tell you if you need more.
I wanted my husband to wait for the virtual. This was based on my father-in-law having a regular one and coming home with a bag (official word?). And later to have to go back for surgery to reconnect his intestine.
But now you mentioned it, he had also diverticulitis.
I just never knew that that might have been the reason.
So I don't know what you can do, it seems it can be perforated either way.