American Cranberry Plant

Yes. Cranberries can grow with normal garden moisture as well as in wet areas. As long as the soil is acidic (you can use peat moss or horticultural sulfur to reduce pH if necessary) they should do well.

They spread by rhizomes (like iris) and require full sun.

Yes that is a great way to use cranberries, that being said cranberries are vary sensitive to soil conditions. If you have good soil for blueberries it will work for cranberries. The only issue that you can run into is that blueberries like well draining soil but cranberries prefer damp soil. While my blueberries thrive my cranberries just do alright. If you are open to recommendations try the Lingon berry, similar to cranberry but better results.

Yes, they should be able to grow fine on a hillside, we would recommend training the tree so it grows straight up and not at an angle.

This is actually closer to being a groundcover. It is a different species/variety than highbush cranberries, which are what you are describing.

I grow cranberries in Zone 7A in full sun with no problem.

I grow cranberries in containers sitting in a small amount of water. They hang over the sides and I regularly prune the longer stems (which increases upright stems making the normally flat groundcover look fuller). Fruit production is reduced when grown this way, however.

American Highbush Cranberry is a native shrub with cranberry-like fruit, but it is actually a Viburnum. True cranberries are Vaccinium (same genus as blueberries) and are always low-growing, spreading groundcovers.

You can expect an average of 1-1.5 lbs. of fruit per established productive plant and as many as 3 lbs. in a good year from established mature plants.