It is advisable to consider your budget and the members of your family, since this way you will know how many days you need to stay or what type of accommodation you can hire.
You should take precautions and make reservations in advance, what can work for you is to buy your tickets in low season, since many airlines offer discounts or promotions that you can take advantage of.
You can avoid expenses that are not necessary, this means that you should discard expensive meals or drinks, but you can allocate part of your budget to important meals or some tourist activity.
An option that will help you spend less is to visit beaches or cheap places, since this way you will know economic options that will allow you to have access to food, places or souvenirs without having to affect the stability of your finances.
Planning a trip and enjoying the vacation of your dreams implies more than you imagine, but with a good strategy your money will yield without any kind of problem.