Two firsts last week during 2 delayed flights - the first, a United Express from Durango to Denver - greeted at my seat by a hand written note on the napkin from the flight attendant welcoming us aboard. (I assume she pre-preps these ahead of boarding). We had a quick turn around because of a late inbound and she said "I'm still doing pre-flight because of the quick turn and probably won't be able to get to drinks - I will get you one as soon as we get in the air". It was nice that she acknowledged without being asked. And she did - and served them in plastic due to turbulence so we could hold them in case she had to be seated. She was great all around. Made my delayed connection onto Houston and even then the steward served all 12+ passengers including those that boarded late. I was impressed overall as I thought both would easily skip PDB's considering the delays.