Can I use vodka instead of isopropyl alcohol?
I am not sure this is a comprehensive answer to your question but this past holiday season I was doing some repair work in my daughter's house bathroom. I needed some isopropyl alcohol to clean soap scum off the bathroom wall painted surface. They did not have the isopropyl alcohol available so instead brought me some ethanol alcohol from a supply that they had distilled themselves. 

This ethanol was a very high proof and it did indeed clean the painted area but it also almost immediately softened the paint to the point that it became a gooey coating on the wall. Letting it dry again the paint seemed to restore itself to a non gooey state.