It's just like a regular hotel, really. Most spirits find the way to the hotel themselves. They get checked in at the front desk, and then given whatever services they want.

[she holds up her hand and starts ticking off fingers]

They can go to the salon to make themselves look nice... Or go to the lounge to get something to eat... Get married to another ghost at the chapel... Or just hang out on on the beach. There's a lot they can do.