"If the shots took only 40 seconds out of your trip, no wonder most of them are blurred! You can't actually believe that the shutter speed is all that matters as far as how long you spend taking pictures. A picture every minute and a half means you spent a good portion of that minute and a half framing the shot, changing settings, etc., unless you just shoot blindly and hope for the best."
LOL I was being facetious, Nancy. I just thought it was silly to concoct some ratio of shots per minute and was responding in kind.
If you're setting up a panorama, you might shoot anywhere from 6 to 12 shots in a matter of 3 seconds. If your camera is set to automatically bracket, it will take three shots almost immediately. If you are recomposing your view by changing the zoom or shifting to the side, your shots will happen very quickly. For indoor shots your shutter speed will be very slow. It's wise to shoot multiple shots of the subject to allow for the risk of hand shake. These do not need setting changes and happen quickly.
The amount of time to set up for shots is typically very minimal because most often people shoot in program mode and they're not constantly changing environments; e.g., you pick a higher ISO when going indoors but you don't have to do that for every shot after that.
If you're spending upwards of a minute and a half to set up every shot you take, you may want to practice more with your camera or get a better camera. Doing this should take a matter of a very few seconds on the average.
"I take digital pictures, too, now after reluctantly switching away from film, but I prefer to experience my vacation and the people around me and take pictures to remind me of those things, not to BE the vacation for me."
I certainly experienced my trip and the people around me, and the pictures I have will help me remember the trip all the better. If you choose to do this with fewer pictures, well, that's up to you.