You check into the Haven in an area that has all kinds of snacks: sandwiches, cookies, water and juice. You then wait for a butler to take you onto the ship, up to the Haven lounge. Once there you can have champagne in glasses, an open bar, mini burgers and fry’s in fancy cups (until the Haven restaurant opens shortly for a full lunch)! You go to your cabin with everyone else…when the cabins open. Sometimes they do allow you to go drop off your carryon (especially if your room is in the Haven courtyard area). Until the rooms open, you can hang out in the Haven lounge, go out into the haven open sun deck area, or rom the ship and eat in the common areas, like everybody else.
It’s a great experience! However, I’ve been in both Haven and regular rooms and have enjoyed..every..single..one of my cruises (even the ones diverted/delayed by hurricanes). But, that’s a story for another day!😀