Seating Chart Chaos

Hey all! While my wedding isn't for another 2 years (just about) I find it a bit hard to seat everyone. I can't figure out who to sit next to who, or who from our family I could possibly mix together at a table. Should I make a kids table? Do we sit by ourselves? Do we have to sit with our wedding party or can we sit with our friends? I know technically it's all up to us, but I'm very lost and some guidance/advice would be super helpful. Thanks!