not that I should have been surprised, but the RJ/Mesa from SEA-LAS is so tiny; two and two, hard not to touch elbows, etc.,with nearby pas; barely a soft drink service, and on 8/12, two very kind FAs, but one who had much trouble with English--don't quite know what she was speaking. But did give me a can of Sprite Zero.
I really didn't care about language skills, but many around me commented.
LAS-SEA on Fri, 8/10 was FC/C flight, and FC was not full. FC had very friendly fa who offered me two glasses of wine without asking (in plastic cups) and passed snack basket twice in 2 hrs. Moral of story, avoid the RJs!

It was not on the CRJ-900?

As for tiny, try flying to Cedar City, UT or Farmington, NM on the Mesa Airlines livery Beechcraft 1900 ;) They are as small as the Scenic Airlines (www.scenic.com/saws1_delta_skymiles.htm) Grand Canyon charters.