Alcohol induces wakefulness in the second half of sleep, so this is a bad idea. (There are many sources on this. I found http://alcoholism.about.com/cs/alerts/l/blnaa41.htm in a quick search.)

Alcohol generally worsens RLS. It also makes apnea much worse. Most sleeping pills also make apnea worse. The one I've found that doesn't is Trazadone, and it seems to keep working indefinitely. The pills (e.g. Mirapex) for RLS do work, but make me nauseated every night.