We had a great time at the 2017 Amazing Comic Con. My family attended Friday and Sunday. Parking was free, but it felt like an eternity walking to the entrance( extremely hot outside). The convention center, however was very clean and air conditioned. The building is huge, The restrooms are clean and easy and find.
There was also another events going on, but it did not seem congested at all. I've always gone for Comic Con, but I look forward to attending other events at the Convention Center.