Massage

I have a fantasy of sitting around with guys and my wife. (she screwed a guy that was very geeky shy, once, we met him in a hotel bar and became "friends". She was with me that night and I was in heaven.) As we talk and drink wine/beer and the conversation gets looser I start to rub her back. I know her and she would lean forward for me to continue the massage. She loves for me massage her back and shoulders anywhere anytime. I in the past unsnapped her bra while massaging her back in the company of people in a local bar. Next time we are in that type of space with guys I want to take it farther. Making it obvious what I am doing one of the guys would bring the conversation around to the massage she is getting. Then it become open season on her massage. I can hold her shoulders and tell them she loves how I massage her back and shoulders. We could end up in a massage contest on my wife right there! I am excited for this and I would unsnap her bra at the start of this if she let me. Is this possible in a local bar or where should we go to try to take it farther.