Context:
Early on me and my wife had discussed MFM threesomes, blowbangs, and gangbangs. She was quite promiscuous in her past, and for me that was one of the things I loved about her.
So far none of that has come to pass. At the time my wife seemed genuinely interested and excited at the prospect of these things. After a bit a time however she soured on the idea. Now, years later I have convinced her to suck mine and another guys dick at the same time. She stated that she didn’t want any vaginal or anal penetration. Which I agreed to for the moment.

Questions:
What, if any advice would you guys give me on making this act happen as smoothly and efficiently as possible? I have already considered having one or even two back up guys on the ready just in case the primary flakes out. I am open to what advice you may offer, even logistical considerations. Since me and my wife have children, we will be doing this at a hotel room for additional context. I will also be recording the whole thing POV with my phone. The gif is of the wife.