The questions you already answer
Ask any box office what lands in the inbox after tickets go on sale and the list is short and predictable: where do I park, where should I stay, how do I get there, can I bring a trailer or a boat. These are not complaints. They are purchase intents arriving in a support queue.
Every one of them ends in a transaction. The only variable is whether the transaction has anything to do with you.
Ranking them by what they are worth
Lodging is the largest single line for any event with a travelling audience, because a bed costs more than a parking space and is often booked for more than one night. Parking is smaller per unit but converts at a far higher rate, since a much larger share of attendees drive than sleep over. Transport sits between the two and is the one most likely to be booked late.
The useful way to read that is by total spend rather than by unit price. A high-conversion, low-ticket item can easily out-earn a low-conversion, high-ticket one, which is why parking deserves a place on the page even at events where almost nobody needs a hotel.
Water events, motorsport and anything with equipment
Some categories carry an extra line that the general advice misses entirely. A regatta audience needs slips as well as beds. A race weekend audience arrives with vehicles and gear and often wants to stay somewhere it can park a trailer. A dog show or an equestrian event has requirements a hotel filter cannot express.
In those categories the accommodation question is not really a hotel question, and sending the audience to a generic hotel search actively fails them. Whole-property rentals, marinas and campgrounds are the answer, and they are exactly the inventory a room block does not contain.
Where the answer belongs
The same place as everything else in this cluster: the confirmation moment. The attendee who has just bought a ticket is deciding how they get there and where they leave the car in the same session, and a page that answers all of it at once is a better experience than three separate searches.
There is no inventory to hold and no contract to sign. Bookings carry a 15 to 20% commission and the arrangement only pays when the attendee books.