It might be worth a look at the Gran Bahia Principe all inclusive resorts on Tenerife. I only have experience of their Caribbean resorts (which are fab) but I think they are all run to the same formula, ie there will be entertainment but it stops at a reasonable hour, although there is a late night disco it is well away from the rooms. The chain is Spanish-owned. The AI was god (although Carib AI is better than European, in my view).
Please can anyone recommend an all inclusive hotel, probably Spain or Spanish island, that is fun for the family (ds are 8 and 6) without noisy entertainment at night? Everywhere I've looked seems to have complaints on Trip Adviser about noise/ British style pubs etc. Thanks!