When I bottle my beer, I always use one plastic bottle so I can squeeze it and check fermentation levels. That said, my triple I bottled 6-8 wks ago is still very squishy and it,s only around 8.5% using a yeast good to 12%. My most recent RIS came in around 10.5% and it carbed an about 2-3 wks using a yeast good for about 10.5%. The difference? I racked my triple into secondary for 5wks and never racked off my recent RIS.
So if you don't secondary your beer, it should carb fine. If you do secondary it, i'd add a little yeast for bottling. That's what I'm gonna start doing.