1st time in Premium Economy

My wife and I are travelling to Las Vegas in June and as it is her 50th,we have decided to go Premium Economy for the first time.
I am after some recommendations as to picking the best seats and would be grateful for input from recent flyers.
Also,I have seen numerous photos but cannot tell if you have pull down tables from the seat in front of you, or if they are built into the seat.
Any advice would be gratefully received.
Thanks.
Andy.
I am after some recommendations as to picking the best seats and would be grateful for input from recent flyers.
Also,I have seen numerous photos but cannot tell if you have pull down tables from the seat in front of you, or if they are built into the seat.
Any advice would be gratefully received.
Thanks.
Andy.