Magic Kingdom Early Entry

I saw that MK has changed their procedures for EE and now allows hotel guests to start lining up for rides at 7:45 am (for 8:30 EE).

My family will be staying at Pop Century, what time would we need to get in line for the bus in the morning?

I’m also curious what it’s like getting the bus back to the resort after fireworks? Would it be better to drive and have our own car at the TTC?