Re money, I'm not sure about the question. Are you wondering whether you can get away using cash only or something else? You won't be able to pay a deposit without electronics, however, contrary to what this sub may lead you to believe the vast majority of escorts do not require a deposit for an hour booking.
This sub has a sticky on how to find a reputable provider. Please consult it
Party favors stuff is best left between people with an established rapport. My advice would be to find an escort that's a stripper. Always phenomenal sex, and they often carry party favors gifted to them by their clients, in my experience anyways.