You should have plenty of time unless you are walking very slowly.
If you can, I would sit toward the end of a row and lower down so you can get out quickly. We have been stuck in the middle of an upper row and it was at least 15 minutes to get out as everyone in the lower rows had to get out before we could. Also, sitting in one of the smaller sections can help if you have a choice.
Also, as mentioned there is a 10-15 minute grace period for the FP..