You're taking a girl on a first date to an Italian restaurant and a ballet? I'm not as much of an expert on women like popular forums members Iceglow and NorthernChaosGod who are undoubtedly masters of this art, but from what I do know, that is not a good move. You need to wait until you've been out with her a few times. Hell, maybe even in a relationship. You then use these two activities to earn blow job points.