Hotels have the option to hide specific fields on the final step of the booking engine, such as extra guests names (besides the primary guest), address fields, and flight information fields. Below is an example of how this would appear on the booking engine. 

With all fields open:

With the fields hidden:

Instructions

Step 1: On the Extranet, under the Booking Engine tab select on General Settings

Step 2: Select on Booking Engine Settings

Step 3: Under Hide fields on final booking engine step make your selections and be sure to Save when finished.