Remember you do not have a grey water tank
Your 69 sounds great! If your unfamiliar with the black dump your probably not familiar with the grey water "system." When you get the Valtera adaptor (highly recommended) get a cap with the drain hose fitting. This is handy if your in a place where you can drain grey and not black. You will not flood your shower and floors with the grey water which has no place to go with the caps in place and the drain sealed.
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."