Last appointment is >>>> most of the time.
No rush, full session+, likely overtime, maybe you get fed with food other mongers brought, and in some rare cases even can get invited to go out/hang out/sleepover.
These girls serve close to 10 dudes a day everyday, if I were worried about sloppy seconds I'd just not just visit them imo. Lol. Oh and that monger who got to sleepover? You're getting his sloppy seconds as first appointment of the day. Lol.