How to tag a toll booth for parking

How do you tag a toll booth for a parking area.

barrier=toll_booth seems logical, however the wiki explicitly forbids to use it for parking (without giving suggestions on how to tag it)
Why is it forbidden? In both a toll road and a paid parking lot the toll booth is the place where you should pay for the asphalt behind the toll booth.

Is there some other way to tag a toll booth for a parking lot / national park / amusement park?