We are staying offsite for two nights in Rust. Landing into Basel late Weds night and staying there, before hopefully getting the first train out on Thursday morning and arranging to drop our bags off first before hitting EP for two full days.You'll be fine next Thursday/Friday. EuropaStreet (that's us!) will also be on resort from Wednesday evening through until Sunday. It will be busy, but not absolutely heaving to the point you will have problems.
Let me know whether you are or are not staying on resort hotel property and that will inform my recommendations...
I have been before a couple of years ago at Christmas when it was fairly quiet, unfortunately not expecting re-ride seasons on Wodan & Blue Fire like we had last time!