Why is the woman concerned?

W: When I booked our accommodations for the convention, I didn’t realize that our hotel was so far from West Fourth Street. I’m worried that we won’t make it to the venue before events begin.
M: There is a bus stop across the street. Do you think it will take long to get to the convention center from here?
W: I’m not sure, but let me find out at the front desk here in the lobby. If the bus takes too long, we can always call a taxi.
M: Well, the convention lasts for three days. I don’t think we’ll miss too much even if we are a little late.