cuba themselves. >> reporter: last year, less than 100,000 americans visited. but an industry group predicts 2 million more would go in the next two years if all restrictions were lifted and the infrastructure may not be ready. the retro look attracting americans conceals decades old water, electrical and transportation systems. >> it's going to take some time for the airlines and cruise ships to put their plans in place but they are already geared up for that date. they know what their itineraries would look like, et cetera. they are salivating at the potential that cuba holds. >> reporter: but for the potential to be realized, congress would have to lift the embargo and there is resistance. >> it is just another concession to a tyranny. >> reporter: but wednesday's decision has filled the travel industry with hope that cuban tourism is around the corner. >> the most important thing yesterday is not that we established diplomatic relations