Curtain rails is a pretty standard thing to take, as are blinds, towel tails and loo roll holders. They are all listed on the inventory document you send to your solicitors so there shouldn't be any surprises. You normally have to leave basic light fittings and bulbs in the contact. I wouldn't bother sorting the small holes for pictures, it will just look worse because any re-painted areas are unlikely to match the colour or finish. In the mean time people can put their own picture up until they decorate and put their own stamp on things. £2 coin sized holes is probably another matter, id be temped to ask if the buyers want the TV mount left in place to have having to repair it.