First, to the OP: Character Attendants have a lot of fun. You really get to know the characters you work with and develop great friendships. You also work closely with photopass photographers. You can be Attending either with photogs or without, in parks or at restaurants where characters do meet and greets. Your role is to make sure to not only look out for the characters (not getting hit, taken down in a crazy hug, bopped on the nose) but to also speak for them. "Oh! Minnie really likes your dress! It looks just liker hers." "Dale says happy birthday! He wants to know how old you are?" You don't have to make the conversations, but it sure helps out the characters who are saving their voices. You also get them off in time for their quick snack (Like Pooh's hunny break). In terms of assertiveness, you have to be comfortable (eventually) with telling guests, "I'm really sorry but Belle has to get back to the castle now. She'll be back tomorrow. Which park will you be visiting tomorrow?" EVERYONE is super nervous their first week (month, lol) but it's definitely something you get more comfortable with after a bit! When you're with a photographer, you can always ask them for help too, we usually look out for each other

It sucks cause you DO get those families that are all, "Ohhhh... but it's for her 15th birthday and we go back to Brazil tomorrow!" and then they give their super sad face and you feel bad, BUT you have to tell yourself that they met other characters, you did NOT ruin their vacation, and think of all the other guests who you helped with the meet and greet. In two years, I've only seen one attendant really have to stand their ground over guests wanting to meet when the line was closed, but again, photographer jumped in and helped. Hope this answered some questions!
I'm also highly interested in this role, is this a hard role to get into? My main roles I want are Character Attendant, Photopass and Full Server F&B. I also wouldn't be apposed to attractions either.
I just would like to know which role requests are easily accepted.
I don't think attending is too hard to get into, but they don't take as many as they do for say, custodial and qsfb. Attractions is a highly requested role, and at the time of your interview you should note your preference (if any) for your desired attraction. of course Jungle Cruise, Great Movie and Kilimanjaro are probably the most requested. But your attraction could also end up being in DisneyQuest, so just know that. Photopass, they generally want you to have SOME photography experience, but they will train you in EVERYTHING on how to use the camera, common problems, how to explain it, etc. Also, as a side note, Full Service is I believe just hosting (seating) and you don't get tips. You can be in a theme park or a resort.