Dude, u really don't want to see your parents 7 hours into your first trip! My first time, my buddy and I dosed about 11pm, stayed up laughing our asses off, and then wee had to drive to school at 630am to meet up with classmates for a computer programming competition. We were so paranoid all morning that everyone would know we were fucked up, but they didn't, and we even ended up winning! The van ride to the competition sucked tho, and so did the first few hours of it. Even tho no one knew, we were still racked with paranoia. Its not fun, man. Take your time and enjoy your first trip from start to finish, don't put yourself in a situation that has the potential to fuck with your head even more!