Be sure that you are comfortable, confident, and knowledgeable about how to manage diabetes without the fancy gadgets and gizmos in the event that technology fails. And technology does fail.
Calculating doses (by hand!), not knowing blood glucose levels, counting carbs – all this might be necessary when devices don’t work. It’s kind of like paper charting in a hospital. Once hospitals convert to computer charting they like to forget that paper charting ever happened (many current health professions students have never charted with pen and paper). But when the computer system crashes, paper charting it is.
Same thing when there’s a power outage in a hospital. Back up generators can help a lot, and so can a back up diabetes plan. Just in case you didn’t already have enough to think about, add being prepared for anything at all times to your list.