DH and I took DS aged 5 and 2 today. Booked it in September and was really looking forward to it thinking it would be a nice way to kick of the festivities but I'm a bit disapointed and don't understand what all the fuss is about. There was no grotto just a corridor to queue through with Peter Pan (the theme for this year) wallpaper and Father Christmas was ok but he really didn't play the part that well. He was very slim and his beard and hair were obviously fake (and he had really hairy arms peeking out of his robe!) and he told DS1 that if he didn't give him eye contact he wouldn't get a gift!
It was free and I can't complain about the service. The staff running it were friendly and efficient and we queued for less than 10 minutes so AIBU to expect a bit more? The grotto is advertised as THE one to go to and there are whole threads on here devoted to how good it is so perhaps i was expecting too much?