Today I should be in the bustling capital of Bangkok. Three years of planning. My bucket list trip to Southeast Asia. Siem Riep, Angkor Wat, a cruise on Ha Long Bay, Luang Prabang, 150 foot reclining Buddhas, Hanoi. Silks, pearls, Pho and the Khmer Dynasty. Three flight cancellations and delays over three days nixed the trip. Here’s how to manage if this happens to you while saving your money and …