There seems to be a few people who want a lot of rules so we can be told how to have fun!
Please don't let us get so bogged down by rules that we don't have freedom of choice. Having too many rules takes the responsibility away from the individual which can't be heathy.
You are going to get idiots whatever you do (lets not just class them as chavs as idiots can be from a wide range of backgrounds and age groups) and while I agree you should minimise opportunities for these people it shouldn't be at the expense of right minded individuals.
Alton Towers certainly appeals to families but a lot of its custom will be from other groups too. I have a daughter but I enjoy an occasional pint when I am having a day out - families enjoy resposnsible drinking too!
If you stop serving alcohol in the theme park do you then look at taking it away from the water park and the hotels - both of which will have families there!
Whilst we are at it, please ban swearing, talking about anything that may be deemed as an adult theme, smoking, chewing gum (as some people spit it out on the floor and in the urinals), those over-sized prizes that get stuffed in my face whilst in a ride queue, any form of garlic as it makes people's breath smelly, and the wearing of crocs (they just look wrong!).
For me, alcohol should be only consumed at designated bars and eating places and not taken around the park. If alcohol is to be allowed to be taken around then it should be supplied in plastic bottles - not just because idiots may use them as weapons but because it is easy to drop them in a busy area and cause a problem with smashed glass.
Towers staff should have the authority to deal with unruly people (whether influenced by alcohol or otherwise) and be backed up by management. If the restaurants didn't serve alcohol to those they considered be be already drunk and security threw out people who acted inappropriately it would send out the right message and sensible people (the majority) could continue to enjoy their day in whatever way they choose.