What happens if Greece leaves the euro, or is forced to leave the euro?
Estimates of how little Greek drachmas may be worth are all over the place, from 340 to the U.S. dollar to as little as 1,000 drachmas to the dollar. Even before Greece is (or isn't) forced to leave the currency union, there is talk of the government meeting its obligations in so-called "parallel currency,'' whose value is highly uncertain.
Has the IMF's austerity program worked so far?
No. Austerity has been the rule in Greece since the first debt-restructuring program was approved in 2010. But Greece's unemployment rate has nearly tripled since, and annual gross domestic product has dropped 100 billion euros, or almost 30 percent. Greece's slashed spending and tax hikes brought the nation's "primary deficit," or deficit before debt-service payments, into surplus territory in 2010. But the program was the equivalent of slamming on the economy's brakes: Output dropped so rapidly that the primary deficit is now again 2 percent of Greek gross domestic product even with tough controls on spending. That's not much different than the U.S., but the U.S deficit as a percentage of output is declining because the U.S. economy Is growing.
What does this mean for Greek tourism?
Uncertainty overshadows Greek tourism. And the stakes of not interrupting tourism are high indeed: Tourism accounts for 18 percent of the nation's economy and employs a quarter of its workers, according to the Association of Greek Tourism Enterprises. Greece attracts as many as 17 million annual visitors, twice the nation's population, and is virtually the only industry still growing in a nation where an estimated 59 businesses are closing each day.
But already, tourists are reporting difficulty getting cash, because automated teller machines are running out, and the threat of capital controls had some merchants unwilling to accept credit cards. Over time, leaving the euro and devaluing the drachma would lead to a period where Greek vacations should be very cheap for Western tourists.
How long that would last, and the impact it would have on hotels and other merchants, is hard to forecast. But resort owners are resisting creditor proposals to end or curtail their tax breaks for resorts on more remote islands and to raise the value-added tax on lodging.
—By Tim Mullaney, special to CNBC.com