You may have figured it out by now? We went the second half of Feb a couple of years ago and it was great weather-wise. A little cool at the start but personally I prefer that to too hot, especially if you plan to spend a lot of time in the parks. Prices and crowds are great. About 5 years ago we went at the start of Feb and I ended up buying some very expensive sweat pants at MK. I was freezing and hadn't packed anything. So I like Feb, but bring some layering clothes if you go then,just in case. Yeah, Pres' day, always surprises me as we don't have any holidays between New Year's and Easter in NS. :-(