I'll be on it again on Wednesday so will report back. Going up from Edinburgh on what is the 0710 from Leeds.
I've been on the last one from Aberdeen about a dozen times this year and have never seen first less than 65% full. It always normally goes into P2 at Waverley so you have to walk the full length of the train to get onto the main station and from looking in the windows standard is always usually around 50% full. During the festival it was rammed leaving Edinburgh so yeah definitely a good one for a day tripper.
I did Edinburgh to Leeds on it at the end of the festival, it was very very full.
I second the comments made by yorkie re the crew.
I'm not entirely sure EC would be happy if they knew Weekend First was being DIScouraged by some hosts. Not that it would have been worth anything given the service on offer!