The Hyatt Regency Aruba has been constructed during a period when more or less all American chains simply took their usual architectural styles abroad and copied their hotels 1:1 resulting in typical 1970/80/90s style rooms with a small bath room, often a tub/shower combi and rooms measuring 3-4 times 5-7 metres.

If you are able to secure a double/double room, such a room could sleep 4, however with just two chairs and one table or one small sofa, not to mention enough space to store all belongings and suitcases, I would recommend not to test the waters, if your kids have a certain age.

If your kids are old enough, I would go ahead and contact the property whether it is possible to book one room regularly and get another (connecting) room on points/awards/credit card sign up goodies.

Be aware however that you compete with tons of newly-weds, package tourists and even worse, Europeans, during high season on Aruba and most of them will contact the property with their own idea why they should get a suite or real balcony...

Do not get me wrong, I wish you all the luck in the world in order to book your desired date and rooms/suites, but I prefer posting the bare facts instead of promising you things that will very likely never materialize...