I've not been on a once-in-a-lifetime trip since digital took over. Back in the day, I bought a dozen rolls a film, loaded a new one when needed and brought them all home to be developed. How do I do it now? Assume I know nothing (which is just about the truth)! I am guessing we might take as many as 1,000 photos. TIA -- I'm working on getting into the 21st century.