Lot of us out here with Gen 1 chargers. Gen 2 adapter would eliminate most model S and X over a few years old.
If you don't want to invest in a level 2 EVSE (agree with that recommendation as it would be helpful for non-Tesla EVs as well, which hopefully there will be more and more), I would just advertise what exact type of outlet it is (e.g. NEMA 14-50, 6-50, etc) and say that EV owners are welcome to plug in with their own adapters.
EVSE ("Chargers") start at around $300-400 though, so it's an investment. But I have made decisions about where to stay in the past based on charging availability. I actually stayed at a VRBO just this weekend which allowed me to use their dryer plug just inside from the carport to charge my Tesla (using my own adapter).
Here's an example of a good, lower-priced level 2 EVSE that all EVs would be able to use (including Teslas with their adapter, which most Tesla owners have
https://www.amazon.com/Grizzl-Level...614644181&rnid=2941120011&s=automotive&sr=1-7