Park cars here if you can’t find street parking (46.8689616, -114.0098973) It’s the parking lot to Rollins field and only a block away from Free Cycles. Bike parking is inside the fence at Free Cycles.
City center motel, the owner supports local bike racing. 1.1 miles from the wedding. The Goldsmiths Riverfront Inn, cuz it’s next to the coolest bike shop in town. 1.4 miles from wedding. Double tree by Hilton. It has a beautiful little bar/restaurant right on the river. 1.4 miles to wedding.
What kind of riding do you wanna do?!?! Probably bring your mtb or gravel bike. Roadies welcome too but you’re likely just gonna cruise hwy 200. Check MTCX for rentals. If they can’t help you, try spotted dog cycles. If you’re similar size to the bride and groom, they might have one you can borrow.
Hopefully. Indoor is an option but cross your fingers for good weather.
Something that looks like you tried a little bit. Not too much though. Sundresses, khakis, button ups, polos, etc. Extra points for Lycra and sparkles.