Pack tightly. Packing loosely wastes precious space and causes clothes to wrinkle.
Pack heavy items on the bottom of the suitcase to avoid wrinkles.
Always include a collapsible tote bag for purchases made during your trip or to hold laundry, wet swimsuits and towels.
You may also want to stuff your shoes with underwear or socks so they won’t be crushed during your travels.
Roll pajamas, nightgowns, sweaters, and other casual wear to fill small spaces, when possible, BUT don’t cram your suitcase full. If you have to force your luggage to close, remove a few items to prevent broken hinges or zippers along the way.