Hi, I'm looking at booking a flight (domestic Air Canada, AP points, Premium Economy) for my wife and son (under 2 years). We would book 2 seats and lap carry our son. The issue is that my wife may find out at the last minute she isn't able to travel, so I would be flying solo with my son. If that happens, I would like to keep both seats so I can stick him there as it will be much more manageable that way on my own. Can anyone tell me if this is possible? I'm worried that if my wife is a no show, then they will just take her seat and I would be left with only one. Could I just change the name from my wife to my son if she can't make it? (I always thought this wasn't possible but a quick search online suggests perhaps it is now!)

Thanks for your help,