Abandon cart events when user is not logged in

Hi,

I am working on a use case where events related to Add/remove from cart could be send even when the user is not logged in into the website. Will there be any problem if we receive events from anonymous users? We would anyway be checking marketing consent before sending out communication. Is there any licensing limit attached to this that says we might exhaust out event calls if we go anonymous? Anonymous users on this website could reach upto 15-20 millions. or even more.