I certainly understand the frustration of bad neighbors even though I believe I've only had them once in nearly 35 years of camping. That said, I use a little common sense also. I avoid holiday weekends because they are know to have a higher percentage of these type of "campers". You know, the loud music, heavy alcohol usage, all night parties, usually a nice loud argument or even a fight at some point around midnight.
I also try to find a larger or more private site when reserving a campsite. This generally means that I don't stay at a KOA or RV Parks as they generally have much tighter sites, increasing the chance that I will be in close proximity to my neighbor, who if they are knuckleheads, likely will cause me great frustration instead of the desired relaxation. I generally use State Parks as their sites generally are significant to give me some distance to minimize aggravation caused by neighbors.
While I understand your frustration at the situation you were in, the lack of complaining until after the fact (they had left) gave you no chance for resolution other than their growing a brain and becoming considerate of your needs (low percentage bet).
My suggestion to you is that because of your sensitivity to smoke and general desire to minimize contact with "OBLIVIOTS" as I like to refer to them, I would suggest you either consider adopting my "scope out the campsites first" plan (using google earth along with the campsite map for the campground is a good way to do this) for maximum separation. Secondly, I would also order a large box fan to have some control over smoke movement in case the situation crops up again. Under $20 and gives you back control of your air quality. Last, you need to decide if your either going to confront the situation by either dealing with the camper, complaining to the management, tolerating it or packing up and going somewhere else. In my eyes, you chose option 3 with a faint bit of option 2 as you left.
I would have been in the managers office demanding that either the rules were enforced or I received a full refund. Stating rules on a campsites website or paper received when checking in gives you some expectation of what the campground will be like and their failing to enforce them is a breach of their duties. I'm pretty sure I could have raised enough stink and painted a picture of their failure to do their job based on their own rules that they would have refunded my money to get me out of there.
Good luck in the future.
