I did it last year, we had a great time but I wouldn't say it was aimed at children. We had 2 kids in our party, 4.5 and 2.5, they felt the food was too fancy for them. My friend and I really enjoyed the food and tea, our server was great with the kids when they started to get antsy.
Everyone gets time to go meet Santa and Mrs Claus for pictures and a chat with just their party. They were great and made sure to chat with my daughter and with me, so I didn't feel left out.