The atmosphere, great team and great community. I loved giving back to my community and teaching potentially lifesaving skills and knowledge to children 2-16 years old, as well as adults who wanted to be safer around water. The work environment was awesome as well.
What I wish was different
I wish that there were more hours and they were less spread out, having to go home and then come back a couple hours later was a hassle. I also wish instructors could have a bigger say in exactly how the Y curriculum is taught instead of it being so rigid. The curriculum will not work perfectly for every kid.
Advice
Be willing to learn something new yourself so that you can teach others. That goes for more than just teaching swim lessons: not only do you have a new skill and experience, but you can now impart it onto someone new and make a good impact on your community.