DW and I discovered Raglan more or less by accident many years ago. We wanted an ADR for our arrival day when we usually just do a little start of trip souvenir shopping and liked their menu the best. We have gone back every single trip since then. DW gets the same 2-3 dishes because she likes them so much and rotates. I personally don't think I have ever gotten the same thing twice because I always want to try something new, and I have never had something that I wouldn't order again, I just keep trying new things.
Anyway, we have been seated in the main dining room and off in one of the side areas during dinner when there are performances. The main dining room is definitely going to be loud, but if you are in the side area it's not too bad. The nice thing about being in that area (for us it was back and to the left if you are standing in the entrance looking into the restaurant) is that the dancers will still come through the restaurant so you get to enjoy a bit of the performance but still have an easier time talking. We have a great picture of them posing with DD when she was about 2 years old. That has been our experience at dinner.
On our last trip, due to staying at a new hotel and wanting to try one of the restaurants there, we made our Raglan reservation for lunch. It was far quieter without the performers and much less busy, but the food was still great. We just started planning our next trip for March 2025 and are looking forward to going back. Enjoy!