If you are doing this for some event, are bottling, and the audience are people who aren't that knowlegable about beer, the best advice I can give you is...
GO buy some beer....
2 weeks is really not enough time, to make a tasty beer, even if you keg,you might be able to pull of a carbed green beer by then, but more than likely not anything too tasty.
If you are bottling forget it...the 3 weeks at 70 degrees that we mention all over the place is just a generalization, a lot of beers take longer than that to carb, and carbed beer doesn't gaurentee it won't still taste like a$$....you can't make geen beer any less by just wishing it away....it still takes time.
Don't forget SOMETIMES fermentation doesn't even begin until 72 hours...it's called lag time....so that will eat into your "week of fermentation" you more than likely will be like everyone else said setting yourself up for bottle bombs at the worst, and cloudy yeasty tasting gunk at the best.
This isn't making koolaid, it's a natural living process....we are not in charge, the yeast are. Three days just isn't enough time...and honestly if you handed them subpar beer, let alone bottle bombs...then you would be doing a disservice to homebrewing, yourself and beer culture as a whole....
If you are serving green, yeasty, and nasty tasting beer to people who have never tasted homebrew then they won't understand..what it's supposed to taste like....
They will think that EITHER you suck as a brewer, ALL HOMEBREW SUCKS (and you'll prolly go blind anyway) or those BMC commercials were right, anything other than fizzy yellow beer, especially homebrew taste like a$$, and we should stick to bud light..."THat's what TV says, so it must be true, right?"
You won't be a great ambassador to the world of homebrewing beer you tried to rush through....and saying "Heh, it's just green, and not fully carbed yet, it will get better with time, really won't fly to someone who drinks bud with their born on dates."
We get variations of this all the time, someone wanting to rush the process so people at a party or gathering can taste the beer....
Even a Hef, if you are bottling, would take four weeks....
plan ahead next time, and if you are aiming ofr an even give yourself a nice window, let's say 2 months (so you can secondary or long primary your beeer to let it clear) and have time for carbing, and a window for conditioning time.
Sorry....but like I said, we are not in charge, the yeast is...they have their own timeframe.