It means I'm going dancing with my sweetie. See "Rained On Not Rained Out" in the EP Group "I love Dancing in the Rain" EP Link
Depends on what the dream is. Most dreams don't have a great deal of significance (that's just my opinion; consult a dream therapist for advice!). I had a dream once where I was buying one red dress and one green dress. Well, actually, that one did have some significance... It depends: what does a red dress mean to you?