Since you asked, I do think it is odd that your grandchildren sleep with you if you have other accommodation available for them. Also, a nine-year-old should be able to bathe or shower alone. I would worry more about lack of independence at that age than anything improper, but at age 9 I would expect a boy to be more modest than you are describing.
Free printable topographic map of Morro Bay (aka Moro Bay and Bernard's Bay) in San Luis Obispo County, CA including photos, elevation & GPS coordinates.
The Morongo Basin is an endorheic basin and valley region located in eastern San Bernardino County, in Southern California. The Morongo basin is part of the Inland Empire region, and is considered to be the easternmost portion of the Greater Los Angeles Area, the 2nd largest metropolitan region in the United States. 1 Geography.