I've always (almost) travelled with his type of attitude. Immerse yourself in the local culture and mingle with the real people. My wife, OTOH always wants to take a tour. I think she's afraid of getting stranded in an foreign country, which is ironically silly ... she's Austrian! ??
She'll admit, though, the best, and most memorable trips have always been those that we just get on a plane and see what's there when we land. Our last time in Paris we were sitting in a café and two college kids were having a discussion in French about the Rocky Horror Picture show ... it was October and they were deciding on costumes. In any case, they couldn't remember the name of one of the cast members (Magenta) so I leaned over and told them. By the end of the night we had killed two bottles of wine with them and got invited to a party off the Champs Elysee. You can't plan evenings like that, but you remember them forever.