Last time we flew them (January) the line up at Orlando was so long the security split the line so we were actually lined up outside. Toronto isn't too bad, but because they fly early and US customs doesn't open until, I think, 5:00 and there are a bunch of flights waiting, it can be a little stressful.
The flight itself tho is as good, or better than Westjet (who we flew with in April). Free food, glass of champagne and a free recent movie. The only thing is watch your baggage allowance carefully, on the way home they are dilligent about paying overage. and they only take cash, no debit, no credit.