Sorry ERROR I meant 55 MM tourists
considering there are only about 44 million residents in the entire country, my feeling is that more than one tourist for every citizen would, indeed, be a bit of a problem.
Iceland does get more tourists every year than they have people- but they only have 320,000 people. Handling 2 million or so tourists, however, is not the same as 55 million.
Croatia and Hungary both get more tourists than they have population, and have built an economy that is very largely based on serving tourists. Croatia has around 5 million people, and 18 million tourists a year- but they mostly go to the beach, to tourist hotels, not to the actual cities the main population lives in.