I usually avoid most BBT places during prime time so I never have any issue with long wait or lines.
Arriving at Chatime on a weekday around 3:30 pm. The parking lot was half full. There were a few people waiting around in a really small space with narrow alley. I really not sure where the line and who were waiting to order or pick up. It did feel a little disorganized.
My usual Roasted Milk Tea with Grass Jello was made well. Just like all other ones I ordered from other Chatime's location.
I cannot imagine how unpleasant it would be during peak hour. I would definitely avoid.