We just got off BTB and we did both Murano and Tuscan. Everything is as people say 18 % was added to bill, however you no longer get a bill while dinning so if you want to see breakdown you must go to Guest Services for a copy. I had to go there to see if we got our discount for Elite Plus.
We had a great meal at each. Murano was superior but now is more expensive.
When I booked on board I booked with CC host concierge and second one I booked at Murano. I was told at Murano that there was a charge but not with concierge. I knew it though. We used to add a tip so actually they are getting less. Makes no sense.
Another note, they ran out of premium Chardonnay, both Mer Sol and Steel were gone on first cruise. It was interesting to see what they would offer in its place. We dined in Blu and was really taken care of. No complaints, but they are regularly running out both I hear.