Yes, our flight is a direct flight from SEATAC to MCO. It flys out at 9:57pm and arrives in Orlando at 6-ish am. This way, we can drive out to SEATAC during the day and not have to do an overnight stay in Seattle. Coming back, we leave Orlando at 7-ish am and arrive in Seattle at around 10am. Then we just drive home to Richmond during the day and again, not have to stay overnight.
I was going to do an overnighter in Seattle, and investigated all kinds of flights and flight times. I was torn between picking cheaper flights for $273 USD on AA that had a stopover in Dallas-Ft Worth. But my DH insisted that I pick the shortest flight which would work well for our youngest DD (who will be 6 when we travel).
Our nonstop flight will take around 5.5 hours each way.
I think you got a GREAT deal for your flights. When you pay for 6 tickets, it all adds up, so I think you did rather well. The Holiday Inn sounds like a good deal too for a room and 10 days of secured parking. Please let us know how it all works out!