If things don't end up going the way you had envisioned, you can always contact the company immediately and attempt to resolve the problem. NEVER hold the girl against her will in your room or keep her from leaving the situation.
Every agency has solutions for every situation, believe it or not. They do not want their clients to be unhappy, that would defeat their whole purpose.
GOOD LUCK! AND PARTY LIKE A ROCK-STAR.
Good advice from Hot Vegas Escort