Do they like a wet soil?
New Guinea Impatiens
Certified GKH Gardening Expert
I can say this with certainty... They do not like dry soil AT ALL. They will not tolerate soggy wet soil, but they will not tolerate dry soil at all. It needs to stay moist, but not overly wet or dry.
This article will give you more information on their care: https://www.gardeningknowhow.com/ornamental/flowers/impatiens/new-guinea-impatiens.htm