If you are having a sit down meal, then you might want to consider seating assignments. There are 2 ways to go about this. You could assign individual people to specific tables or reserve a handful of tables for family. It's up to you, you're the only one who knows how you want things and what details are important to you.
INDIVIDUAL ASSIGNMENTS
There are A LOT of creative ways you could assign individuals to a table, so get creative! One thing to keep in mind if you do individual assignments, is that you want to keep it as easy and simple as possible. It can be stressful and time consuming to put table assignments together. You have to consider the people and who will work sitting together. A lot of times it causes confusion and congestion when everyone is looking for their name or table. Be sure to figure out a way to avoid the mess. Doing individual assignments can take up a lot more time and money, so if you're looking to splurge, this is the way to go!
RESERVED TABLES
This is simple and easy! You don't have to worry about where to put people and who to put together. Just reserve the number of tables needed for family members. Then they can sit by who they want and there won't be any possibility of confusion or congestion looking for their assignments. Be sure to inform family that they will be sitting at the reserved tables. This is also a great way to cut costs.
So in conclusion, just be sure to weigh all the options and pick which one works best for you!