Think about what you and Geoff want, and do it! Even if it doesn't make everyone else happy. It sounds to me like you might be happier just having a private ceremony in Tahoe early in your trip, enjoying the riding, and then only dealing with family at a reception when you get home. Nothing wrong with that, if it's what will make you happy.
One of my big regrets is that we gave up doing what we wanted to do because no one else liked it. We still had a nice wedding, but it wasn't what we really wanted. Basically, we gave up what we wanted and paid a lot of $$ to make other people happy. Not really a good idea in my book
Most days in life don't stand out, But life's about those days that will...