MF2011

Is the official deadline still on April 15th if it's a Sunday? Or is the deadline now the 16th? I have accepted at one school but I'm hoping to get a call from the waitlist for my first choice. However, I can't ask to be removed from the school I accepted at after the 15th without repercussions. How does this process work when the official deadline is on the weekend? Will the admissions committee come in on a Sunday? Thanks!

I've been waitlisted and I wanted to know if anyone can offer advice? I sent a letter of continued interest to the director via email. Should I also mail a copy or would that be seen as being too aggressive? Is there anything else I can do to bolster my chances? Has anyone been in this situation and later been accepted/rejected? Any advice would be appreciated. Thanks!