As a new listener (I have been listening for four months now - and have gone back and watched every single podcast for the past year), I think I can offer up some "new" prospective.
I do get there is tension between the crew. You can clearly see it sometimes. I pick up on body language very well. You can tell JL is nervous at times when trying to explain her family-friendly viewpoint. Kevin and JL clearly do not see eye to eye, but they seem to be OK with each other as people. Surprisingly, Dustin and Craig seem to clash - but you have to watch Dustin's facial expressions to get what I am saying. I personally LOVE Craig's dead-pan reaction and humor, you can tell Pete does not like it AT ALL. John seems to get along with everyone, but if you watch closely enough, he has issues with JL at times. Pete and Kevin do not get along - watch Pete in his interactions - he starts to fidget and wriggles in his seat when Kevin and him do not agree. Kevin is naturally a complainer (which is NOT a negative here) and people tend to get into heated debates with him, but you can tell he picks up on other peoples body queues that he is going too far and stops - it is almost as if Pete or someone else has pulled him aside and told him to stop being so negative during the episode. I like his negative comments because it is true, real (I often think the same as he does when it comes to service expectation) and it is not always going to be sunshine, rainbows and unicorns at Disney.
As for Jeni Lynn - I do NOT agree with her viewpoint a lot of the time, but that is because I do not have children and I am gay. I like listening to her though, it is nice to hear the other side of things. Does she work with this cast? Yes! She is pretty, intelligent and informative.
I do want to say one thing though - one thing I have noticed on the boards here is that old timers (people that live on these boards) defend the cast no matter what and always say that the cast are like family. That is impossible. Pete, John, and Corey are bosses. Everyone has to agree with the boss in order to keep their job. For reasons I will not go into here for fear of being deleted and banned for life - I have noticed that they are touchy about their working relationships and public perceptions.
If Jeni Lynn is reading this - please do not take what we say here to heart. I love you as a crew member, you keep doing what you are doing - good job! We are just talking about the chemistry on the show - which fluctuates and is fluid I am sure.