Definitely agree with scottychaos on that one. The sphagnum deal was primarily for Nepenthes and Drosera.
I'll break form and confess I always kept my established Sarracenia and VFTs in large pots/bowls without a drainage holes and they did just fine. If we got a heavy rain and the soil was flooded I just tipped it on its side and drained some away. They couldn't have cared less.