I'm glad to see so many people try to help their fellow Disney friends when you are at the parks. I see a LOT of people who are obviously in their own vacation bubble. Rushing from here to there trying to fit everything in. Pretty much ignoring basic courtesy to anyone around them. I hate seeing that. Not just at Disney but in every day life as well.
Then I see people offering to take pictures for families, giving up seats, etc. and it restores my faith that yes. Some people genuinely do care about others and would help them out for five seconds with a picture than blow right by them like they do not exist. And how hard is it to give up your seat on the monorail/bus to an elderly person, young child or a mother who clearly needs to sit after chasing kids around all day?
Open a door for someone. And come on now. Is is really that hard to say thank you, please or excuse me? Honestly.
We always strike up a conversation with a CM we are standing next to at a QS restaurant, in a ride queue, where ever. They genuinely seem to like it as it it gives them a break from the same deal, all-day-long.
Don't loudly complain about the wait. NEWS FLASH ... It's Disney World, there are a lot of people there and you know what? They're all waiting, just like you. They don't need or want to hear your loud mouth complaining about it.
I know my perspective is a bit different living five minutes from Disney and we are there nearly every day. However, we like to help other visitors who may not have the opportunity to go as much as we do. Or, even come back at all. I would hate for a family to save and save and save their money to visit here and go home with a negative attitude due to others behavior.
I love giving tips/tricks to people they may or may not know, making their trip a little easier or seeing something they did not know they could do or see.
We will always try and stop to take a picture for someone. We typically see the same family (not really but in theory) with usually the dad or mom who has the camera and you know they are taking all the family pictures on the trip and probably are in none. Offering to take their pictures with them in the photo may end up being their favourite picture of their FAMILY vacation, as it is the entire family, and it was because of you. If someone did that for you, I'm sure you would speak about them long after the ears have come off and your back to "normal" life.
Taking 10 seconds of your day to help someone out that could possibly mean a better vacation for them, doesn't really seem that hard to do to me. Being nice to someone is completely free. Negativity can cost you a lot more than you may every realize.