We usually leave ours locked up in the hotel, because if we carry them wherever we go, anyone we run into tends to expect us to play for them on the spot. Sometimes that's not feasible, so that's how we decide-- based on our plans and commitments for the day. Sometimes we know that the day will include a long boring stretch where a private music break under a tree (or an impromptu singalong) would be a good idea easily implemented.

For camping, though, we each let our own gut decide. Some sites have been sunny and busy enough with camp staff traffic to leave cases locked in the camper, some have made us nervous. When in doubt we take them along, knowing that will bring other challenges we will need to address. The main thing is we don't stew about it or make inflexible rules for ourselves in advance of knowing actual conditions, since we've gotten a little more experience dealing with the various factors involved.

Same with the bike.

Another factor for us is that our homeowners' policy covers stolen cargo.

~S~