Yes, you can but people that can afford vacation homes often let them sit empty and lose a lot of money because they don’t want anyone messing with it- it is expensive, and loses a ton of money but they can afford it.
You can rent out timeshares on Redweek. I've never used the service but it's often recommended to timeshare owners who are unable to stay in their timeshare properties.
Only if you're lucky enough to own it in a place that hasn't outlawed AirBNB rentals yet.
You didn't hear it from me but the scheme is: an individual or group of investors will buy several properties to AirBNB in a moderately-popular vacation spot. Typically someplace fairly rural and off the beaten path. But desirable enough for photos that might trend briefly on pinterest. Then they (rather covertly) drum up local support for banning AirBNBs, while being careful to make sure their existing rentals are grandfathered in. Now their investments have a moat and they can charge whatever they want for them, especially if there are no hotels or resorts anywhere nearby.
That seems like a risky ploy. Guaranteeing that the existing AirBNBs get grandfathered in is far from certain. Then again, I've seen plenty of AirBNBs that just ignore the law so maybe it would be fine anyway. I once stayed in one that had explicit instructions on how to respond if someone asked you what you were doing at the house, which fake names to use and everything. Felt incredibly sketchy, but it was also about a third of the price of the cheapest hotel room in the area and didn't have cleaning fees or extensive checkout cleaning bullshit so that wasn't unexpected. Was a great location too.
It’s your property; within zoning restrictions, you can do whatever you want with it.
Not true with a timeshare.