Research your trip early in its planning. Start with books. Talk with someone who has been to where you're going. A current experience may be the most reliable information you will gather. The Internet is a useful resource for travel information, especially if you don't know anyone who has visited your destination.
Stress is the traveler's main enemy.
Don't work yourself into a frenzy. All the arguing in the world won't help an aircraft arrive on time. Even places with sterling reputations may have off days. Ask to see a manager if you encounter problems. Be firm and insistent, but remain courteous.