The other thing to be aware of is that if you choose to enable your room card as a credit card (allows you to charge things back to your room), your credit card may be charged a certain amount upon check-in .
For instance, last time we stayed there (over a year ago, so policies could have changed) Royal Pacific had certain "plans" you can choose. Forgot the names of them, but one plan limits your charges to $100.00 a day, another $250.00 a day, and so on.
So, if you are staying three days and choose the $100.00 a day plan, RPR may charge your credit card upon check in the total of $300.00. Our last stay there, we did not use the bulk of our room charging privileges, so our final bill was lowered by the amount we did not use at checkout.
Now, just like the one-night deposit thing, we have had some receptionists actually charge our card, some not.
Our most recent stay was at Portofino. It did not have specific plans and they just enabled our room keys as charge cards and did not charge our credit cards any kind of pre-set balance. I have no idea if that is the norm there or if it was one of those hit or miss policies that missed us.