Would not go back after what I witnessed: barmaid pulls out a old tub of hellman's mayonnaise which, lo and behold, contains the house's white wine. She proceeds to refill one of the empty wine bottles right from the tub and places a little wine pourer cap. Good as new, I guess.
Embarassing. God knows what happens in the kitchen.
At least don't do it in plain sight in front of customers.