The router stuff looked super confusing when I looked into it, but there are several different methods you can use. My router wasn't compatible with the custom firmware so I bought a cheap USB wireless adapter on Amazon and have had great success using that as well as a program that cycles through mac addresses…

I'm guessing they'll patch out the photo sharing features and re-enable the service for drawings. It took me a while to even realize you could do photos because features unlock over time as you use Swapnote.