Just got back from BC concierge.............and honestly I would go with YC. I found the concierge lounge to be way to small, and the kids just ran all over the place!! Now there were times when you could get in there and have a few minutes of normalcy while it was quiet but for the most part I found that the parents let the kids have the run of the place. We ended up a few times just going down stairs, and paying to get something to eat, instead of enjoying the lounge which we were looking forward too very much! One person actually turned around from the toaster with his bagel and threw it on my daughters plate. Not even realizing that it wasnt his own. Like I said way to crowded. The crowds wouldnt have been bad if people could of had manners, and kept the kids in line. My children are 14 and 11, and we made sure they knew how to behave before we even went in. I talked to one of the conceirge staff about this, and she agreed, and said that the yacht club is like a compleetly diffrent place...........she said much more quieter, yet still kid friendly. My husband I walked over that evening, and did find it to be much calmer, and with a much more peaceful atmosphere. We had a wonderful time, and enjoyed the hotel very much, but if I had the chance to do conceirge again, I would definetly go with YC. Hope this helped some.
Have a wonderful time.