Hotel blocks- Courtesy versus contracted?

Hi everyone, I can anybody explain the difference between a courtesy block versus a contracted block? I have selected one hotel that I would like to use however the lady hasn’t return my phone calls and only email me. Any insights would be helpful what to do. We are tracking roughy 2.5hr to our wedding and I’m only offering 1 hotel as we have shuttles to / from. Thanks in advance for your help.


What I did get from the hotel is that if we don’t do some type of block when they see an increase of hotel bookings they will substantially raise their prices which I don’t want to see happened so I definitely think I need something in place.