This is what I generally spend in cash once we leave our pre-cruise hotel. I welcome comments; cheapskate, reasonable or overboard?   Porters at the pier $2.50/bag ×4 bags twice = $20 Excursion guide $5.00/person × 3excursions = $30 Excursion bus driver $2.50/person × 3excursions = $15 Cab driver to and from pier $2.50/bag ×4 bags twice = $10 Cab driver at port of call $5.00 × ? To and from = $10 Room service $5.0