In most states they have to be 21 to be served alcohol anywhere including thier own home. you would have to check the laws for your inividual state.
No.
No
he/she can drink alcohol but he/she has to agree not to drink at all this one night so that he/she can get the others home safely
Yes...drink more alcohol and they will go away.
no
Absolutely Not.
No
People usually take drugs or drink alcohol because their friends do it, their parents do it or they have problems at home or at school
Arizona only permits exceptions to legal age to drink or possess alcohol in the case of religious or medical exceptions. See link. Additionally, giving a child alcohol could be considered abuse in any state. http://drinkingage.procon.org/view.resource.php?resourceID=002591
you have to be 5 years old or over to drink alcohol in your own home because you are in your own house. but you have to be over 18 to buy alcohol anywhere. and you can be 14 to have a alcoholic drink with a meal.
No, it isn't illegal, but you should definetely not drink alchohol unless you are 19 or older!!!
If they do not have legal custody, no. In fact, the custodial parent should take this matter before the court with jurisdiction over the case. They should try to obtain a court order that the child not be served alcohol while in the "other parent''s" custody. Serving alcohol to a minor could constitute child endangerment in some jurisdictions and the parents who does so in liable for any resulting damages. Some states allow parents to serve alcohol to minors at home but in other states it would be a felony. You should consult with an attorney.