I think the Europa-Spezial Schweiz fares are only available online. After going to the DB website and reading the "Angebotskonditionen" (conditions of offer), I do not see anywhere that it says you can purchase them that way. Compare that to the Dauer-Spezial offer, which says, "Im personenbedienten Verkauf zzgl. 5,- Euro-Aufpreis", (Personally assisted purchase is an additional 5 Euro surcharge), which means you can purchase the Dauer-Spezial tickets at a counter for an additional €5. They don't mention that possibility with the Europa-Spezial tickets.
So, it looks like you need to have it mailed to an address in Europe (the ordering form allows you to specify a delivery address different from you home address). I would make sure that the hotel will accept the mail tickets for you.