What kind of royalty we need to pay?

Hello. We are prepare to use UE4 engine on based tracking technologie “Optitrack” with VR. We want to buy some models from marketplace. What kind of royalty we need to pay? (maybe for models & license of UE4). Can won’t pay with point 9 of License, a mean “9. Revenue from interactive amusement park rides which use the Licensed Technology.” I don’t understand what is mean: “which use the Licensed Technology”?
We will use this synnergy of technologie like attraction in our little park of vr attractions.

There are no royalties specifically associated with using Marketplace models - it’s all just part of Unreal Engine.

It’s true there are no royalties for use with interactive amusement park rides, and it sounds like you’re asking if your use will fall under this exception. But I don’t understand enough about your use to answer that question.

Look let’s imagine, it will be attraction witch using system of some cameras for tracking moving of user to send data in UE4 through the data processing server. User can see the game in the VR glasses. Is it enough for understanding?

And it’s in amusement parks with no special fee for this particular attraction?

Possible both variants. It will be decided soon. Is it matter? What variants?

If there is no fee for the attraction, just a general admission to the amusement park, that sounds like it falls under the exception.

If there is a special fee just for the attraction, that sounds more like arcade (which is not exempt from a royalty).