I have found YMMV. And depends on the girls. Some are okay, some not on various options incl multiple pops. Develop some rappo if you see a girl multiple times, ask nicely, but do not push. Take their answer for what it is but you can always politely express regret/ while praising that it would be so nice of her to do xyz. Your success rate goes higher the nicer you are! Even though they are in for the $, everyone likes being praised/ wooed.