Every time I see an easily farmable block for sale I start to wrack my brain trying to think of an effective way to offer them for free somewhere, but only allow access for one person to get there and they had to buy a location token for the actual price. It doesn’t work.
So, being able to charge admission would solve this, allowing a player to sell a single use key for an advanced lock or token for a portal which will only show open on their screen. This would not only make package selling possible, but owners of large slides or mazes could also throw down a reasonable price for entry. Footfall isn’t enough for a well crafted attraction.
I realize there is the possibility of abuse with this, since someone could charge admission for an empty room, but with advanced locks being able to lock shop stands, among other things, there could still be precedent for this, allowing others to rent machines or storage.