Then go to ROOMS -> SETUP - ASSIGN BOOKINGS and set ''Unit Allocation'' to "One per Guest". '''Maximum Nights'' sets the maximum period a booking will be accepted. If "Maximum Nights" is set to Activity the departure date is not collected and the wording of the booking form is changed to represent booking an event or day activity rather than an accommodation.
Then go to ROOMS -> SETUP - AVAILABILITY and set ''Maximum Booking Length'' to ''Single Day Activity'' and ''Collect Number of Guests'' to ''No''
Go to SETTINGS -> BOOKING PAGE -> ROOMS and change Unit Type to the activity you are selling.