That's actually kind of a sweet spot, timing-wise. You're probably about as protected from a symptomatic infection as you can get.
Two questions:
1) Would wearing a mask make you stand out in that crowd on a poker night? I am assuming "yes", but just thought I'd bring it up. Still ...with a pair of shades, you wouldn't have to worry about your poker face ("Hey -- it can spread through the eyes, too! You're lucky I'm not in a Vader mask! Now enough COVID talk -- slide me that huge pot!").
2) Is it the kind of crowd you could ask to test themselves before coming to play? Again, I am assuming "no", that's it's too casual for that and probably that most of the crew is past COVID more or less. Corollary: If someone shows up hacking their lungs up, would one or more of the guys say something?
Beyond those questions ... I co-sign shader's post. Not too close to your booster, and not too far away -- you'll be all right. EDIT: Didn't read far enough -- yeah, co-sign not just shader, but Ignatius and the others.