1) to those complaining about the american work culture, you should really step back and realize how gravy it is--especially compared to the whole of a place like japan--where 70-80 hour workweeks are the norm, for pittance pay (mechanical engineers start at about $28k us) because everyone in japan must start at the very bottom and put endless facetime in devotion to "the company". i know hs teachers who havent had a day off in three months and use maybe 3 days of vacation per year, no joke. many companies require you to live in crappy company dorms for several years subject to their rules, and companies can dictate the method by which you travel to and from work because they pay your transportation insurance. japanese companies dictate a lot of things in your life. japan is a truly work centered culture, so stop being whiny americans--your system is gravy compared to other parts of the world. the longer i live abroad the more i realize how whiny and entitled other americans feel
2) op--if you want to go just go--taking a vacation is going to be too different from living--you say you eont do touristy crap, but you also wont be working in their work culture, paying taxes, or dealing with cultural stuff everyday so you still wont get much a feel for it even if you think you will
my advice, as someone living in a rural coastal fishing town in butt**** nowhere, japan, completely isolated and a one hour drive in any direction from any other foreigner, is do it, but go to a city not the ass end of nowhere.
also youd best look into whether or not you caan even just go somewhere--if you were to show up at immigration in japan without a proper visa they will put you on a plane right back home. most countries will probably do thesame, especially as america doesnt have working holiday visas--most countries are going to want you on some type of work visa when you enter meaning you have to line up a job beforehand...dont count on coming in on a tourist visa and getting hired--most companies have no incentive to bother with the hassle of switching your visa for you when there are any number of others already in posession of the proper visa
do it, but make sure you can enter the country before you pack your stuff