If this turns out to be a bust, I've checked. April 19 is actually Banana Day. I put it out there to see if anyone would be upset to run Banana Day event along with the scheduled event. That gives plenty of time to do a few promotions for better participation.
I started promoting old ad week two weeks ago, put my efforts in Juicydeath1025's Lego Week, and am now back to promoting it again. Towards the end of April, I'll start promoting Comic Book Character Week with an added bonus of having May The Fourth Be With You day in there. Also, Free Comic Book Day is there, so I have two special days that actually work well with the theme week.
BTW, I forgot to tell you, but I love that Banana Phone graphic. You should make it a user template.