Mt. Pleasant? My wife and I both graduated from CMU. Three degrees between us.
We got married at Sacred Heart (downtown) and had the reception at the Holiday Inn on Pickard. Our rehersal dinner (and my graduation dinner, for that matter) were at Riverview Country Club on Broomfield. Small world.
You're right...not a whole lot to offer for being romantic. I would take her to a nice dinner at Mountain Town Station, then out for that long walk. There are some nice, quiet areas out west of town, where Broomfield goes south toward M-46.