1. Learn the basic road laws. Ride in the direction of traffic and use the bicycle lanes when available. California law says you must ride as close to the right side as possible, unless the road is too narrow to be shared—in which case you are allowed to “take the lane.” (Not all motorists understand this, though, so always take precaution in this situation.) The California Bicycle Coalition outlines all the bike laws to know before you ride.
8. Manage your money. If you plan on using your debit and credit cards, make sure to notify your bank in advance that you’ll be abroad, or you may find your card blocked for suspicious activity. Research beforehand where are the best spots to exchange your money into local currency as ATMs might be scarce in certain places. When out and about, always carry a small amount of cash with you.
Some of my biggest highlights are things that sound so normal: it was drinking and singing with newfound friends in the Philippines, hiking alone in the mountains surrounding Taipei, trying to guess what everything was at a wet market in Saigon, dropping my travel plans to fly home and surprise my mum for her birthday, and spending six weeks in Madrid because that’s where my friends were spending the summer.
I love your suggestions, but I want to strongly caution against #73. I’m a retired chemist from the pharmaceutical industry, and I can tell you that prescription drugs sold in blister packs are that way for a very good reason; not simply because pharma likes higher manufacturing and shipping costs. They are that way because the drugs require them for stability, generally because of moisture, UV, or even atmospheric oxygen. Best case, they lose potency. Worst case, they create toxic degradation products. I personally take drugs out of the box, but not the blisters, and store them where they won’t get a lot of light and heat.