Trekjeni - Whoo hoo first of all congrats on winning a GREAT TRIP ! ! !

I have no input on how to plan a Tahoe Mtn bike wedding but I second, third, or fourth the motion - do what YOU both want!
If his parents don't care and you aren't close to your mom, it isn't a big deal to go off for the ceremony.

I did the whole big wedding thing and would never do it again and would encourage my children not to do it. Waste of time, energy and money. I would have a celebratory reception though.

Best wishes on your marriage however it happens