We have been here about 9 days, generally most restaurants are following ng procedures.masks are worn in most branded shop like migros and bin, but not so much in the tourist shops both by the stafg and customers alike.
Not many people wearing them walking about in open air (i personally dont have a problem with this) must be worn on public transport /taxi.
I certainly have felt very safe here and have no more worries than would have in the UK.
Just be sensible and enjoy your time here oh and fist bump instead of hugs to your Turkish friends.