Conversation so far:
How many U.S. states have a legal drinking age of 21
All states prohibit providing alcohol to persons under 21, although states may have limited exceptions.
what kind of limited exceptions can states have providing alcohol to persons under 21
States may have limited exceptions relating to lawful employment, religious activities, or consent by a parent, guardian, or spouse, but may be limited to specific locations.
are there exceptions to providing alcohol on private property
No state has an exception that permits anyone other than a family member to provide alcohol to a minor on private property.
what about are ther exceptions to providing alcohol from social hosts
Many states have laws that provide that “social hosts” are responsible for underage drinking events on property they control, whether or not the social host actually provides the alcohol.

Question: what places are exempted from age 21 limit
Self-contained rewrite: what places are exempted from the age 21 legal drinking age limit in the united states