I ended checking in at T-24.
For those curious, wasn’t sure I was going to be at home, with passport, and since I needed a passport scan, wouldn’t have been able to get to seat selection. Since reservation wasn’t coming up for check in initially, tried with seat selection and got the screen indicating it’s not available within 24 hours. Not sure if an agent could’ve/would’ve helped.
Now hoping something we can use becomes available on the connecting flight - no 3 seats together or reasonable at the moment, and given we are traveling with a pre-schooler and lap infant, would rather be together - if that’s not gonna happen in E+, it’ll have to be in E-