Taking my daughter (fortyish), my granddaughter (thirteen, going on twenty-three) and myself (ain't telling my age) on a one-night cruise on the GEM out of NYC. Looking for a lot of fun for the three of us. Want the three of us to go dancing in one of the lounges. My questions is, would levis and a dressy top be o.k. to wear? Any suggestions would be great. Thanks!