Well, I took my 4x5 to Maui last yr, but pre-negotiated with my wife about it. I took exactly one color shot on Ektar, and paid for it dearly by having to spend most of the next day window-shopping in Lahaina. But it was exactly the one shot I wanted. And since we were staying right on the shore
beside beautiful lava formations, I did sneak in one black and white shot too while my wife was napping. Our honeymoon twenty years before was in Kauai, and I took the 4x5 then too, shot it very
very conservatively, just when my new bride herself was in the mood to shoot the Nikon. We're going back to Kauai this coming Spring, probably again with the 4X5, which I'll use only a few times,
but make each shot count.