I had lunch recently with a friend and she brought along her own tea for us to share, along with beautiful handmade cups and a thermos of hot water. She graciously explained to the hostess that we intended to make our own tea, and offered to pay the restaurant for a tea service (they kindly declined charging us). It's a smart approach for the restaurant to allow us to brew our own tea. I will go back. ;-)
Sharing lunch and this special tea (direct from Wuyi, China - a Wuyi yan cha) was wonderful!
Have you ever taken your own tea into a restaurant? I think I'll make a habit of it.