What are the speakers mainly discussing?

M1：I can’t believe the Vancouver convention’s so soon!
W：I know. It should be great, with all those big-name speakers. Are we all set for transportation?
M2：Uh—the plane tickets are already taken care of, and you arranged for the rental car while we’re there—right, Mike?
M1：Uh-oh. I completely forgot to make the car reservation! I’ve been so busy getting my workshop materials ready!
M2：All right... We’re only two days away from leaving—it might be hard to get a car now!
W：Let’s not stress out about it. I saw something about a bus service to and from the hotel. Let’s talk to the hotel receptionist and see.
62.What are the speakers mainly discussing?
63.What problem do the speakers have?
64.What does the woman suggest they do?