Some other suggestions, although not necessary - Travel pillow, chewing gum (especially for those who have ear problems during flight), book and/or ipod and one change of clothing (air lines do lose luggage occasionally)

scuba_Nikki Article on Carry on luggage

My tour guide Drew taught me to tip well at places like Moose & McGillicuddy's. The staff will be more attentive to your needs and pour you bigger drinks!!

Melsie Article on San Diego

If you have a high-def video camera, be sure to take it on a hike with you to the bottom of the canyon. HD is the only way to bring out the gorgeous contrast of blue sky and red rock that you'll want to show everyone at home.

ankopsu Article on Bryce Canyon National Park