I'm sure they'll be allowed to, but if it's only a ramp-up event with a capacity of 10,000 then they won't all be able to.
In any case, I'm not sure whether they'd have any kind of priority seeing as they have season tickets for next season and the SSC Final is part of this season.
In theory, if there's any kind of STH priority, it should be for current Withdean STHs.