How does one travel/vacation if they have chickens? Are they self-managing enough to be left alone for 1-2 weeks a couple times a year?

With room, food, and water, we have left chickens on their own for 2wks. The challenge is keeping clean water and food and predators. We had 30 gallon buckets of water with nipples on the exterior, and food towers (home made). They had the entire interior of our barn.

I wouldn't leave them in a small coupe without a run for that long.