We went yesterday and we were all a bit disappointed and it is very poor value.
I don't want to spoil it for anyone though so here are a few tips to get the most out of the day...
Smuggle in some food, £3 for a jam sandwich!
Make sure they shut door properly on awful transporter 'tent', my boy spotted the trees outside weren't moving and it spoilt it for him. It is VERY loud in the tent so watch the tiny ones.
Get to each time slot 5 minutes early to get a good seat and ensure your children get attended to, as some elves are brighter than others.
The post office sells you a snowman postcard, then charges you to send it, then it goes nowhere! Make your own mind up on best way to deal with this.
The children get to decorate a gingerbread man with sweeties and probably eat it, so schedule food around it.
Don't expect too much from the toy factory, it's just a puzzle to do, but the prezzie at the end is a similar puzzle so it kind of ties in.
Try not to let the little ones see the balding man reaching out the roof of the toy factory to turn on the snow machine (foamy soap suds) as it again spoils the illusion. The fake tree snow looks great but encourage them not to touch it as it's just tissuey stuff and is a let down close up.
The toy factory (do a puzzle), gingerbread house (stick sweets on a gingerbread man) and visit Santa (nice but thin chap from Yorkshire in a very dark room with incessant flash photos being taken) are all time allocated so don't miss them.
Dont hold out on spending much time with The story teller, the elves are just nice girls (some very tall!), the huskies will take up 30 seconds of the day and there are 2 sad looking reindeer about ten feet away and thats about it really.
Above all, the more you ignore the details and enter into the Spirit of the day, the more your little ones (and you) will enjoy it. You wont get £55 of merchandise per child, you wont think you've left the UK and you wont recommend it to a friend, but hey you can't get a refund so just enjoy what you can, smile and make it special for the sake of all of us that still believe in Father Christmas!