You should not need to wet sand your car unless it was repainted. Mine was just painted and after 3 months of sitting, i finally went ahead and wetsanded and polished it out. Unless you have serious scratches, you shouldnt need to do that. Most people just misuse that word.

For cleaning up your paint, grab a makita polisher, 3M compounds and some wax. Use according to directions and your paint should look brand new.

I did this for a dealership for a year and one of my bosses always used the term wetsanding for anything which was pure ignorance.

Clay and cleaner wax should do it and a real coat of wax is all it should need. Doing any wetsanding is a few houndred bucks in equipment to get it right and buffing a car by hand wont get the deeper scratches that are in there right now.

Pm me for more info
Pete