My Fiance and I plan to have a very private wedding with just our two best friends. We are going to have a reception a few weeks later at private lake that has a "shelter house." This is going to be an extremely informal event. We plan to allow kids and there will likely be games such as basketball, golf, etc. His family says we should have a Potluck. You would have to understand that they are always having parties at this location and everyone has potlucks. His mother and sisters would likely do the majority of the cooking. I have started a list of those we would invite and it is likely going to be about 60-100.
Do you think a potluck where only the immediate family that offered to cook brings food is fine or too tacky? They are all great cooks by the way.
Another thing, since this is going to be outside with no smooth walkway to the shelter house, and since everyone else is going to be in casual clothes or even shorts, should I wear my wedding dress at any point? Would it be better if we just displayed our wedding picture?
If only family members cooked, then you are fine. It would be better not to call it a pot luck though. They are simply your volunteer caterers.
It is your choice to wear your gown. Many guests may want to see you in it. However, if you think that it may appear a bit odd due to the location, skip it. Everyone should be comfortable, including you.