Getting ready for "vacation"

We are getting ready to head to Kansas for 2 weeks. Although I am extremely excited I am also nervous about driving for 2 days with a 3 year old and an 18 month old. I'm sure there will be many hours of whining, are we there yets and hysterical tantrums. Maybe I should invest in some ear plugs before we head out. I am looking forward to seeing my family and friends again since my last visit a year and a half ago but I also know that once we get home I will probably be more exhausted than I was when we left. Wish us luck all!