Afraid I don't get it?
We also are looking at a 15+- Amst to Bud on viking or other. We are a married couple, 66. We have been on several sea cruises of up to 20 days each (Alaska, Carrib-many, Europe, antiar., so pac, etc...on Holland, NCL, RoyalC, Carn, plus), traveled all of Australia and NZ, some of Canada, done a couple long bus trips, car, train, travel...but never a river cruise and never a safari. May be too late for the safari, but the river cruise is looming.
To walk from $10,000+ suggest a material no go problem.
SB sailor?