which card or ticket for transportation is best for a 4 night stay in Hongkong?

Hi we will be staying 4 night in las vegas hotel.. 2 days in disneyland and 1 day in ocean park.
We 3 adults and 2 children. Whats the best way of card or tocket to buy for us for our transportation.. From airport to Las vegas hotel (back and forth) and from las vegas hotel to disneyland (back and forth for 2 days) and ocean park (back and forth).. Thank you.