FAMILY versus FRIENDS?

[modelguyy]

I'm turning 21 next month along with my best friend. So my friends decided for both our 21 b-day's we all go to vegas. If i go with friends i party hardy. Then my parents decided they want to take me to vegas along with the whole family. so that means a lot of sight seeing and no partying. I really want to go with friends because first time to vegas and 21 i know a lot of partying a lot of girls a lot of drinking and sex and strip clubs and night clubs and you name it. But with family that won't happen. More like shows at night and a LITTLE gambling and a LOT of sight seeing. I prefer with friends but my parents say they are already ordering for airline tickets. I really want to go with friends but don't want to hurt my parents by saying no to them. How do i get out of this, how to fix this problem? how to go with friends without hurting my parents feelings?