UPDATE: Road Ready Repair were recommended by the Two Rivers Campground staff and I spoke to Neil on Christmas day. He said he could be there the following morning and I was his second customer. It only took a few minutes to replace the broken fitting (special crimp tool required) and we were on our way by noon.
We checked the weather (using Wunderground Weather road trip planner) and it was really bad on our prepared route (Memphis, Dallas, San Antonia) so we diverted to Birmingham, Baton Rouge, San Antonia and had clear roads and 1 to 3C temps with no problems at all. Made it to Meridian KOA and we'll be heading to Baton Rouge soon. It's 33F right now but by noon it's supposed to be 45F so we'll head out then.
It sure was nice to have use of the toilet and shower again
Thanks for all the comments and support.
Bob & Sandy