Originally Posted by get there itis

Assuming the parking brake isn't set, that's a lot of extra info. I think good judgment and common sense would be to only provide info of an operational necessity to the crew. This is not a customer service PA.

There's a PA guide on DeltaNet that describes "the basics" as asking the flight attendants to prepare for departure. Even though it's supposed to be done within three minutes of takeoff, I think it would be ok to provide what number you are in line because it provides a clear time frame to them.

The guide also says that IAW sterile flight deck regulations, this PA shall be limited to "the basics" unless the brakes are set.