I'm not sure whether we can just blame macro-economic developments for the downmarket tourists who come to the resorts nowadays. Although some tourists in Istanbul are eccentric, we don't get bunches of yobbos (lager lout synonym) as you do in Marmaris and the like. This is because these people are attracted to beach holidays. It was always so and when I was a teenager and went on family holidays to Spain, such people were around then. Of course price comes into it and if Emre hotels were in the Seychelles you might get less of the chavvy crowd but even chavs have money nowadays (aka Mr Rooney) so even that's no guarantee.
As for the low cost employees...I agree with you about the seasonal element. The waiters who work near my house here are rather cool and know how to behave whereas when I went to Marmaris and was unaccompanied, I was harassed constantly by off duty (and even on duty) waiters. I'm not even sure the efficiency wage theory would help improve their manners. Ignorant is ignorant I'm afraid.
If I was a hotelier I would probably no longer follow the all-inclusive package and try to find some way to lure the punters to me promising a little extra quality for a slightly higher price.
The small town I live in (30 mins from Marmaris) is struggling to cope with the high valued lira, all inclusive hotels and the rise in food costs, rents etc. Quality of staff and client base has deteriorated constantly over the last 14 years and other than the 6 weeks (annual Brit holiday time) the whole sector is lucky to make a profit. The South West needs support from the government before the tourism sector is totally at the mercy of the major foreign tour operators.
This is the story of last 20 years of the tourism in Turkey. For one reason to another hotels in the south and even in the cities have been manipulated by the tour operators, run by non financial operators and lost profits under all inclusive packages. Quantity is certainly important to keep the sector alive but we certainly need some strategies & planning for the mid and long term.