I find it more beneficial, in regards to airfare, to play the waiting game. I'm lucky enough to live in an area with 3 airports within an hour or so drive that fly into MCO, so I stalk the airlines websites vigilantly. I don't know what the situation in Halifax is, but look at multiple airlines too. My next trip, I'm flying to MCO with USAir and flying back with AirTran. I saved a good bit of money!
DVC since 2010
Upcoming: Aug 2013-BWV, Oct 2013-Pop
Past: June 97 - DL, Aug 2000-GF, June 2003-offsite, Aug 2004-CB, Apr 2005-POFQ, June 2007-ASMov, May 2010-PC, Oct 2010-SS, Oct 2011-BLT, Oct 2012-OKW, Dec 2012-BLT