Make sure the peat moss has no fertilizer added. Contents/ingredients should say only Sphagnum peat moss.
It doesn't really go bad unless you get worms or bugs in it. I suppose if you keep it wet it will break down faster. It can be more difficult to break up or wet when it dries out more though.
Pot size for the Sarracenia should do for a year or two. S. purpurea don't grow as rapidly as some of the other Sarracenia and they aren't sensitive to root crowding. This one had huge pitchers in a 3.25 inch pot over at Peter's nursery.
Grand Hotel... always the same. People come, people go. Nothing ever happens.
Pots are plenty big enough..perhaps too big!
(but I would leave them..they pots are fine)
Looks like both the Pitcher plant and the VFT's are planted too deeply though..
My CP page: http://1stclass.mylargescale.com/scottychaos/CP