Hi there - this module was written before the 2e travel procedures were published, which is why it doesn't fully align with them. I would suggest making each trip from one point to another take 1 watch, and don't worry about weather (and if they get lost, they end up at a different point of interest). You can also extend the party's deadline and use the full 2e procedures - the aim is that they should feel some time pressure, but not be at serious risk of missing the opening doors.