So we have gone to Butlins once a year for the last four years, Skegness three times, Bognor once - last year we did Skegness again. We won't and aren't going back.
Our kids are 6 and 4 now, I will base this on last year's visit to Skegness.
It's rough in that it's full of parents drinking, smoking, screaming and swearing at their kids and the kids are basically feral and do what they want. Obviously not ALL the parents / kids are like that - but the majority are and I hated it.
The pool is ok, but considering what I have read recently - if a large section of it is closed, they should have disclosed this before letting you book. The rest of the pool isn't huge if it's the main pool that is closed.
The fair is ok, but gets busy and staff are usually trying to run multiple rides so one is closed whilst they run one then switch, so queues can build up.
Food is crap, the "premium" dining was bad, the food court was even worse. It doesn't leave you with many options unless you like Burger King or fish and chips - unless you plan on self catering or ordering takeaway to the main gate.
Everything about Butlins is LOUD and brash - going into the skyline is an assault on the senses - there is either loud music playing across shit speakers, the constant noise from the arcades or screaming kids.
The shows are bad, we never bothered with them but I also have no plans to queue for an hour to get a good seat at the "pantomime" even those people have already booked - I never understood that!
The accommodation is pretty rubbish, we stayed Seaside and Fairground at Skegness which are the two most expensive - I dread to imagine what the cheaper ones are like. Our last visit was in Seaside and they put overlooking the noisy delivery yard which I complained about and was told tough.
Price wise, isn't too bad - it's cheap and you get what you pay for.
On another note, the new Skypark is quite honestly dangerous. My daughter nearly broke her arm on it, most of the slides are only reached by climbing rope tower things so if kids back out of going down the slide, they can't get back down easily. Kids who are far too old to be on them push the little ones about and I saw a number of children get hurt because of this. There is no staffing on it so it's a free for all.
We won't go back, going to Center Parcs this year.