HI & welcome. English brand toiletries: there are some you would recognise, though often quite expensive. Why not stock up at Boots in the airport, after you have gone through security, they should have everything you need there?
There are lots of mini markets & supermarkets to stock up on essentials, most are open until 10-11pm & others are all nighters, so you shouldn't have too many difficulties.
Sk is short for sokak ie street, sorry can't help with the specific street nos., but I'm sure others will know.
Kids menus are widely available, so that shouldn't present a problem. Calis market is on Sunday, so you'll be able to stock up at the begining of your holiday. Fethiye is Tuesday & on Friday has a farmer's type market.
There are lots of small parks around the area, a piece in the local paper reported the mayor opening the 48th recently.
Anything else, just shout & I'm sure someone will have the answer!