So I just did the math. 21 pages with 4 spaces for stamps is 84 slots. A passport is good for 10 years, so that’s 8.4 slots/year.
Does anyone have any suggestions for how to get a lot of stamps inexpensively? I’ve heard Asia is a good way to fill up your passport, but airfare there from the US is A) pretty long and B) pretty pricey. I want to A) fill up my passport and B) do it without breaking the bank! Possibly a Caribbean islands tour?