Also, make fresh choices, such as grapes, watermelon, apples and further fresh fruits. Pack your foods separately in Ziploc bags, then place in your cooler. Sandwiches and other finger foods like cut vegetables and dip are easy. Make your sandwiches fresh once you arrive and keep the spreads and fixings on ice. Even if you're just carrying healthy snacks in a purse or backpack, you can include a pack of "blue ice" that will safeguard your food and avoid mess. By not mixing ingredients in advance, you'll keep the spoilage to a minimum. 

Be aware of vacation burnout. You don't need to see every attraction or experience everything a new place has to offer to have a fulfilling trip. Build some time into every day for rest and replenishment. This might entail letting yourself just sit for awhile watching the clouds, the surf, listening to music, or reading a good book. Try being a wave or becoming the sky. I love an affirmation used for relaxation when I lie down, especially in a meadow, "My mind is the sky, and the clouds are my thoughts; I just watch them float by."

Consider carrying a small first aid kit. Available at camping stores, they are compact and easy to use. "Don't be scared, be prepared." If you already know how to use homeopathy, the homeopathic home kits are very practical.

Shared oxygen/air space is also a challenge. You can take an aromatherapy spray (that won't chemically violate others air), such as rose water to make a protective aroma barrier around yourself when journeying in public.