ooh, so many awesome questions to catch up on!
weather: nothing special, just more eager to go out into the warmth. I could do without the yo-yoing, though (one week it went from sleet to 70s/80s, back to 40s. It's ridiculous)
5ks: all of this, but slower:
I will go with mile 2 as the worst in a 5k. Mile 1 is fast (sometimes too fast) but you still have energy. Mile two should mean settling into a pace but the awful realization is that you are starting to deteriorate with more than half of the race left. Mile 3 is the most physical pain but the end is near.
For mental reasons mile 2 is my least favorite.
training for distances: the original barrier of getting off the couch was the hardest hurdle. Other than that, I've always been fairly confident in racking up the miles -- I've always said that I can walk anywhere, and it's been pretty much accurate. Just need a lot of time to do it

10k to half was also relatively easy because I was able to do a 10miler and a 12miler in between, which definitely helped with the mental hurdles. I don't see myself doing any marathons, but I imagine that would be a huge jump to make.
special events at Disney: got to do the Christmas party our last trip, and when we did a big blowout trip for my sister's graduation a few years back, we were able to do a bunch:
- morning safari at Animal Kingdom (since discontinued?): this was great; you got to get into the park before it opened, go on the Safari while the animals were still relatively active (or inactive...our truck got stopped by a mama rhino who refused to move until her baby stopped inspecting the truck), and get a buffet breakfast before being released into the park. Loved it.
- nighttime safari at Animal Kingdom Lodge (since changed/discontinued?): this was a lot of fun as well. It was a very small group, you were driven around the grounds of the Lodge for at least an hour learning about the animals and their welfare, and then finished off with a special meal at Jiko.
- Wild Africa Trek: you get to go behind-the-scenes in the safari areas, learn more in-depth about how they care for the animals, feed the hippos, cross the rope bridges over the gators, and have lunch out on the savanna. Totally awesome, highly recommend if you love animals and/or exhibit design.
- dolphin encounter: I have mixed feelings about this (due to the whole keeping dolphins in captivity thing), but to the program's credit, the bulk of your time is actually spent outside of the water learning about dolphin conservation efforts and watching the keepers study the dolphins through short cognitive tests. Also, hugging a dolphin is everything I wanted it to be and I didn't want to stop.
Wish list: Diving at EPCOT (now that we're certified!), the Halloween party, Keys to the Kingdom.
Olympics: OMG yes I now need to readjust sleeping habits after 2 straight weeks of figure skating. Love it. Probably more partial to the summer games, since I was a swimmer myself, but I definitely love watching all of the athletics (preferably not on NBC, ugh). One of the top 10 coolest things I've gotten to experience was volunteering for Athens 2004. Amazing. (all the same, the criticisms of the IOC and WADA are totally valid, and I've never ever wanted the games to be held where I live, so there has been more cognitive dissonance involved in watching the last few olympiads. Still, can't wait for 2020.)