We are booked on Spirit Airlines out of LaGuardia in November. I just found out that since I booked my flights on Expedia, not with Spirit directly, that I cannot choose my seat assignments online. I have to do it at the airport when I check in. Since there are four of us traveling (including two children), I'm worried that we won't get seats together. Has this happened to anyone, and how early do you recommend we get to the airport to ensure that we are seated together? We have an 11 a.m. flight. Thank you.