Naked cocktails is an interesting idea, actually. I realized thinking about it that I've never arranged it that way formally. It's definitely been byob and don't be a ....../stoned mess on our dime and time, and that has worked out. We had one guest who downed a six pack in an hour and was planning on more. Nope, thanks for the fun,bye bye. We've had many guests bring some tall ones, a flask, or whatever, and had refreshment breaks once we ran out of script, and were deciding whether there was to be more. Those have been nice for having the informal ice breaker that was skipped when someone shows up to find your wife spread eagled on the bed in a blindfold. That can lead to some truly unique experiences, partly because she now has real time input into what the limits are in the now, with known quantities etc.
Other times she's kept too busy to think about drinking and socializing much. Both kinds of times are fun.
This guy liked to sit back and sip his beer while she blew him. Took his time with two tallboys too lol.