I have had Merlin passes that work out a bit cheaper if you get a "family" deal....but what is little known is that you can get standard passes for everyone but just upgrade ONE pass to a Premium pass then that way parking is also sorted for the whole family but only need to upgrade ONE pass....and the shops & cafe's do a deal of 20% off....also get an annual pass drinks container (£16 each) but just get one then you can fill it up at any of the theme parks with a soft drink of your choice...considering that the drinks can cost almost £2 a time its worth it...
Great value...Lots of fun to be had and on top of the theme parks there's the Sea Life Centres & other attractions too.

It's worth keeping an eye out for half-price annual pass deals which Merlin have offered before in January - my boyfriend and I both purchased standard annual passes last year (2012) for about £80 in the sale, and they were more than worth it, especially as we both lived close to London so could take full advantage of attractions such as the eye and the dungeons, which we almost certainly wouldn't have paid to go to under normal circumstances. We also made an extra effort to get as many days in theme parks as possible - I think we racked up about 11 or 12 days during the year - and now am using this year to visit other parks (e.g. Oakwood, Blackpool etc)as we're well and truly 'Merlined-out'!

You even get 20% off booze! i reccomend buying it mid season, so you can fill your boots this year and then enjoy all the new attractions in the first part of next year.

I have bought a premium pass for the last 3years and it. Is worth it +you get 20%off shops cafe and bars

i have a standard pass i am 15 whitch is good because i can go to thorpe park and chesseington world of ad for free i got the pass this year (jan) i had my money back by the august i have gone to thorpe park 3 more times after that will get it again next year