Activity for Kim

Sooooo i want to have open seating, but i want to have a set of tables reserved for close family up front, any suggestions on ways to make this easier. Or has anyone seen this done to know if its worth trying!

So our wedding date is also my groom's birthday. I want to do something really special! I want to have an amazing cake made and all of our friends and family can sing him happy birthday! Any thoughts on birthday cake ideas or anything else i could do...