Amalfi is best when you can actually see the water. Skip July and August. Go in May or September when the weather is warm but the narrow cliffside roads aren't packed with tour buses. You get the same lemon groves and blue water for a better price and half the stress.
A solid trip usually runs about $3500 for two. We can break that cost down into monthly chunks instead of taking one big hit to your savings before you even leave the house.
The 0% intro APR for 15 months on purchases and balance transfers is a deadline, not a gift. If you still have a balance when those 15 months are up, the standard interest rate kicks in and your trip becomes significantly more expensive.