You guys will be fine!
Just take your time and enjoy the ride home!
Doohickey should be fine!.
The failure rate on 08+ models is much less than the previous years. Still a good idea to change it when you get home.
The spring will lose tension first, saw one that was limp as a noodle, 08 bike with 22,000mi on it.
If you are concerned adjust the tension on it before the ride home. Very easy, takes 5-10min at most.
I changed mine at 5k (09") and everything was still good.
Dont sweat it, enjoy the trip!