How many nights are you staying? Sorry I don't see it anywhere in your OP.
Any way, here's how it breaks down.
For a party of 3 staying for 6nights/7days:
3 guests x 3 credits each = 9 credits (pooled together)
9 credits x 6 nights = 54 total credits (pooled together)
PLUS: 2 snack credits per person per night of stay
2 X 3 = 6 per night
6 x 6 days = 36 snack credits
PLUS: 3 refillable mugs
Breakdown:
54 credits for meals
36 credits for snacks
3 refillable mugs
Remember you can use these credits anyway you wish.
I hope this helps