Butlins, Pontins, Haven ... and Warners. Just dont. Haven't tried Butlins hotel(s) which at my age is the only accommodation I will consider in this country.
They are cold, depressing and contain certain types you would not normally encounter. Even my son, fairly well behaved, run amok on the Haven site where we had a caravan and nearly got thrown off. The same site where I had my car stolen. Where they had the hells angel convention. Where they set up a gate house to get in. Till they realised you only went in if you really had to and dismantled it.
My husbands best trip to such a venue was an all male jolly with the local junior football team to a tournament in Wales. The girls were at home, the boys were drunk, and the team did well. But he still recalls sleeping in his coat and wooly hat.