Hello! When we entered the terminal, we saw there was a pretty sizable crowd, particularly by the Spirit Airlines IAH Terminal counters to check in. As Spirit is an ultra-low-cost airline, they highly recommend that people check in ahead of time online, which we had done to save ourselves some time. But if you have to bring a bag, you’ll have to stand in line at the counter. Depending on the hour of the day, the queues can be very long, so it is necessary to go early. Even with the queue, the staff were still efficient, and the process went on smoothly, so that passengers were able to check their bags without too much trouble.