I worked two seasons at butlins...
Adult weekenders are a mixed bag, you will either love or hate them depending on what sort of person you are. it is certainly not a classy place and for the price you pay you should certainly not expect luxury
the vast majority of the clientel will be drunk chavs who are wasted, if you are with a group you should have no problems - there will be a MASSIVE amount of stag and hen nights
drinks are pretty expensive in all the bars, prices are raised for adult weekends - so if you are big drinkers make sure that you pre-drink in your accom before going out as it will get very very expensive
bars do not take cards and all the cashpoints on site charge, if you want cash get cashback at the shop
24 hour drinking and arguing chavs on your accom line might make it hard to sleep due to noise, if anyone is bothering you just get security on the case as they deal with disturbances very quickly
centre stage is the best place to spend your evening, its the biggest venue and is likely to have the bests acts on. however, check out the programme as reds sometimes has good performers. your best bet is to ask the staff in venues such as centre what they would suggest you see, many of them see the acts every week and know what is good
all the food on site is massively overpriced, as is the mini supermarket shop - go into town there is a morrisons that is a 10 min walk or wetherspoons etc
this might sound trivial but MAKE SURE that you wash your hands properly after going to the toilet etc, with all the people there bugs travel really quick
Centre Stage - Cross between a theater & nightclub
Reds - smaller version of centre stage
Jacks - jumping jacks cope
Irish bar - small bar
Bar Rosso - cocktail bar (be aware cocktails are pre-mixed and rather weak)
you are best to start in centre stage then move to jacks late for a dance