HotelPlanner.com ← Knowledge Base What is The Knot Hotel Room Blocks powered by HotelPlanner.com? What's a group hotel booking/hotel room block? How does payment work for a group booking? Why do I need to sign a hotel group agreement to book 9+ rooms? What happens when I submit a rate request? How do I request an agreement? What if I need to change the details of my group trip? What happens if an offer expires? When should I submit rate requests? What if I need to book event space as well? What if my question wasn't answered here?