Savvy travelers know to include travel insurance in their vacation budget and to buy a policy when they book their trip. Doing so provides the longest period of coverage and allows you to take advantage of coverage that must be added shortly after you pay your first trip deposit.
But a lot can change before you depart, such as your itinerary. You may decide to revise your itinerary by swapping out excursions or may want to stay longer than you initially planned. Or, you may have simply made a mistake when you filled in prices