A group of 5 friends go to a restaurant in Ottawa to celebrate a birthday. All the members of the group are older than 21, except Regine, who is 17. During the dinner they order 2 bottles of wine, asking the server to bring wine glasses for everybody at the table, as they will share the bottles. After two hours and more drinks served, the party leaves the restaurant. Regine, while riding her bike home, loses her balance and falls on the street, hurting her leg. Regine is taken to the hospital where the doctors discover her altered state of drunkenness.

Based on the information presented above and applying the legal concept studied in the past weeks, provide a motivated response to each of the following questions:

1 - Determine if there are elements of liability and define the legal principles that are applicable to this case.

2 - If there are elements of liability, identify who should be held accountable for the unfortunate event.

3 - Summarize your decision and provide recommendations.