Puerto Rico gives you white sand beaches, bioluminescent bays, and the lush trails of El Yunque rainforest without needing a passport if you're coming from the US. Spring is the sweet spot to go because the winter crowds clear out, the weather stays warm, and flight prices usually drop from their peak.
Splitting up a typical $1800 price tag takes some planning so you don't drain your checking account at once. You can use the Citi Simplicity® Credit Card to give yourself some breathing room, since it offers 0% for 18 months on purchases and balance transfers from date of account opening.
That 0% window is a hard deadline, not free money, so make sure you can swing the monthly payments. If you still have a balance left when those 18 months are up, the remaining amount will start racking up interest at the standard rate.