Weddingbee boards

So here is my question.

 I'm having 3-4 food stations throughout our reception instead of a plated dinner or buffet style.  My fiance is in the military so we are currently stationed in San Antonio, he's from California, I'm from Iowa and we met and fell in love in Dallas.  Each food station is going to represent food from those regions.

 Dallas- BBQ, San Antonio - Tex-Mex, Iowa - Farm Fresh, California-sushi,fish, etc.

 I am incredibly torn as to what to provide for seating.  The goal of the food stations is for everyone to be up and about, interacting and getting to know new people.  Not stuck at one table talking to the three people I decided they should sit next to.  We have so many people who don't know each other I thought this would be a great way for everyone to interact. 

 My problem is that I'm not sure what to provide for seating.  Should I still have enough tables for each person to have a seat at a large round table and sit down?  Or would it be okay to provide seating for maybe 2/3rds of the guest list and some people might be stuck standing around the taller tables.  The food is all going to be small and bite size so it won't require a steak knife or anything of that nature. 

Also, should I create a couples table?  I'm not doing assigned seating because as I said, the goal is for people to walk and really create a fun party like atmosphere.  So then is a bit hypocritical for us to have our own table?  Also, if a lot of our guests are up and about I know that we will probably be standing and talking to them.  What if our "couples table" sits empty the whole time? 

If I'm not making sense, just let me know.  I can explain further!

 Thanks hive!