Southwest never extends the expiration date of travel funds. Your best bet is to wait until they expire and then call Customer Relations and ask for them to be reissued as a LUV Voucher. The fee for this is $100, which will be deducted from the funds balance. You have 6 months from expiration in which to make the request, and the voucher will be valid for use by anyone (not just the original passenger) for 6 months from the date of issue. These requests are granted on a case-by-case basis. Keep in mind that this unofficial policy is subject to change at any time, including the amount of the fee. Good luck!
This is a great question. For starters, I think it's a great decision to bring the seats on the plane with you. It's easier to manage, plus it's a familiar place to them, not to mention the safety benefits.
Next, you will have to place the car seats in the window, as per Federal Aviation Regulations the seats cannot block the access to the center aisle. So you won't be able to place seats as you suggested.
I would suggest that you seat yourselves "two and two" one in front of the other. This way you will be able to put the babies in the windows and you and your spouse can still see and talk to one another, reasonably.
A few things I'd also mention are that if the flight isn't full, there's a possibility that you can each keep the middle seat open and still have the row to yourselves. You probably won't know that until Boarding occurs.
Next, keep in mind that most infant seats these days have a base for ease of use, but they aren't required. Check the Owners Manual on your seats; you may be able to leave the bases at home. One (two) less thing to carry!
Finally, if you don't get an A Group boarding pass, your family qualifies (children 6 and under) for Family Boarding, which occurs just after A Group boards.
Best of luck in your travels, and come back to The Community with any questions!
P.S. You might also call to ask about Infant fares for your flight. Sometimes they aren't priced better, but sometimes they are. You have to call to get them, they're not available online.
There was a big long string of a reference code, but the glitch seems to be repaired as I was able to book online last night using desktop software again. Thanks @Lindsey but it seems to be solved for now.
@Bluffton96 you're correct, the medical insurance is incldued in the ticket price. You can purchase a visa in advance or at the airport. We definitely recommend purchasing beforehand. You can purchase it here: https://cubavisaservices.com/product/sw-visa-card/
Have great trip!