Because alcohol restrictions/restoration
and slavery abolition
only applied to government...
the individual has been Constitutionally free to do or not do those all along on their own property...
I don't usually double post, but I wanted to make sure that these were handled separately.
Go look at the text of the 18th Amendment, particularly Section 2:
The Congress and the several States shall have concurrent power to enforce this article by appropriate legislation.
Similarly, look at the text of the 13th Amendment, particularly Section 2:
Congress shall have power to enforce this article by appropriate legislation.
Both of those restrictions were enacted by granting Congress (and, in the case of alcohol, the several states) the authority to enforce it. Without those sections, the amendments would have had no force or effect.
That's why there are similar clauses in Amendments numbered 13, 14, 15, 18, 19, 23, 24, and 26. Amendments 1-10 only deal with restrictions on the governments, and of the remaining Amendments (11, 12, 16, 17, 20, 21, 22, 25, and 27), they all deal with procedural issues (such as the election or term of the President, Vice President, or Senators), explicitly grant a specific power to the government (as in the income tax), repeal a previous amendment, or impose a new restriction on the government itself (as in the case of congressional compensation).