How much is the cost in 6 or 5 people?

The cost are different we went on days they were having a special. But you can beat the prices. You can get on their website and mess around with the dates and get the best deal

Hotel room price is listed on website but there are many extra activities that are costly plus food and beverage, souvenir items taxes etc. The experience with your family is worth it though.

I really depends on the room. You could get a cheap room with trundle beds and tell them it's a group to save money. BUT the bigger rooms are really nice and worth a couple hundred for two days in the park!!