Don't get hung up on the definitions of recession and depression, because not even the experts quite know how to define it.
Suffice it to say that in the late 1920s , had you invested one $ in the share market, you would not have made anything until around 1945.
Apart from that, recessions seem to be the order of the day, and seem to run in two or three-year time spans...... however this time the grand order is very different. In the old days there were no "sub prime mortgages", no "Collateralised Debt Obligations" (CDOs), and no "synthetic derivatives", which means that many large organisations and banks have investments in products they do not even understand and are based purely on mathematics wishful thinking rather than basic finance.
With trillions of dollars of paper being produced to overcome these problems, I do not believe you will see a quick return to anything resembling a normal situation in the finance and banking world, which will have flow on effects for all of us. That means retirement funds will take many years to recover and get back to where they were a few years ago, many retirees will struggle to survive, those looking forward to retirement will have to tighten their belts most significantly and may be on the breadline, investors in everyday finance companies, investment banks and hedge funds will have lost a fortune, and those poor folk who thought they had equity in their houses will find out that it has turned into negative equity and may well be forced out of their homes by the banks-- -- and so it goes on.
Money will be tight for many years to come, and places like Phuket will definitely struggle. As for the mass building of condominiums and apartments in Patong at the moment, many developers will go bust, unless they have significant financial backing. Be prepared to pick up some low-priced property over the next two years, and also be prepared for many small businesses and bar owners, who operate purely on cash flow, to go to the wall.