Many travelers consider all their flight-planning work done once they buy a plane ticket, and they don’t think about it again until it’s time to fly. In most cases, that’s a recipe for trouble. There are many things that could go wrong and ruin your trip long before you arrive at the airport, and paying just a little attention — I call it “gardening” your reservation — and knowing how to handle those issues in advance could prevent a travel disaster.

Let’s begin with the simple things. As you may have discovered, sometimes there are no seats available for you to select at ticketing. That could be a result of overselling the cabin, or the only seats left may require an additional fee. Many fliers simply leave it at that, hoping for a seat on the departure day.

It doesn’t take much to do better than that. Whether you have no assignment or are stuck in a middle seat, chances are a decent seat will open up before your travel day, as other passengers get upgraded or cancel their reservations. All you have to do is check the seat map from time to time. Convenience and comfort are very important to me during a trip, and I don’t like to leave anything to chance. That means there are certain things I have to do to “tend” to my bookings, so that any potential issues can be resolved in advance…