Kinda depends on your plans for the child-free weekend you have in mind - is the goal to just hole up in a cabin or hotel room all weekend, or are you planning to go out for meals, shows, or other entertainment that’s less fun with kids?
We recently got away for our first child-free week since becoming parents 7 years ago. Wife detailed she had some specific goals she really wanted to make sure we took care of (anal/DP, her dominant, me dominant, and cumming on her face/breasts), while I wanted to see how many times we could get busy without responsibilities. We were at an all-inclusive resort, so our days looked like “wake up, sex, workout, breakfast, sex, beach, lunch, sex, pool, dinner, sex, bed.” Didn’t have to worry about cooking or getting out to restaurants - lots of saved time. One of the sexiest things that came from being that freed from responsibilities was just the mental freedom of “whatever, whenever.” I don’t think I’ll ever forget the way my wife looked at me as we finished dinner on our first night and said, “you go leave a tip, then take me back to our room and f*ck me.” Really set the tone for the whole weekend.
For a future sex weekend away, I might try suggesting we each write things we really want to do on some note cards, like 5 or 10 cards each, and see how many we can get through. Might be time play scenarios, or positions/sex acts, or toys. Data is always fun too, so tracking stats like number of orgasms, or how many times can you edge without cumming, or keep a running clock of how much time was spent sexing.
We’ve also played some variations of sexy board/card games. My favorite was one where whoever scores the most points on a turn cycle gets too set a task for the other until the next turn ends. My wife seems to get progressively worse at Scrabble the longer I make her keep her Womanizer running…