I know we're all having fun here with some good natured joshin', but seriously, this 'no bikes allowed on the honeymoon' thing, while seemingly innocuous, is deeply, deeply wrong because it sets a precedent. If the honeymoon is a 'special occassion' in which she can dictate how you spend 100% of your time, what's next?

If it were me, I'd take the bike on principal, even if you don't ride it at all.