You guys are awesome - thank you so much!

I'll be sure to check in with the agents @ the counter @ LAS when I get there. So should I NOT check-in online for my original flights?

I'm currently on:

FL 484 LAS-BOS 22:40-06:45
FL 431 BOS-MCO 10:30-13:30

Ideally I'd take:

FL 196 LAS-JFK 21:20-05:12
FL 155 JFK-MCO 06:55-09:43

But I'd also be just fine with

FL 484 LAS-BOS 22:40-06:45 (Same first leg)
FL 439 BOS-MCO 08:45-11:50