We used Johan & Sandra in Cabo for a siteseeing tour. They are like tour booking agents they hire local companies to do the tour
We did a tour to San Jose Del Cabo the guide was from Grayline...a very good guide.
Cannot help with other ports
Alexandr Pushkin, Carnival-Holiday, HAL-(old)Westerdam, Orient lines-Marco Polo, Royal Olympic-Olympic, NCL-Dream, Dawn-Princess, ACCL-Grande Caribe, Oceania-Insignia (3), Regatta(4) Marina (1) St Lawrence Cruise Lines-Canadian Empress
Scenic River cruise June 11,2012