Yes in some places (under certain conditions), no in others. Assume it's illegal (even if you're with someone over 21 who could otherwise legally have alcohol in their possession) unless you have definitive knowledge that you are fully in compliance with the laws in your location.
Eighteen years old
No! how is it wrong to like a eighteen year-old??
You have to be eighteen
no.
Typically, a 14 year old cannot work in a restaurant. Since most restaurants serve alcohol, all staff must be at least eighteen.
1990
With a work permit - sixteen. If they serve alcohol - eighteen.
with your parents consent yes
Up to parents
No
Yes, both are adults.
Yes