Yes, there is a cost, but it is severely discounted for the first 3 days, I would contact them directly for prices. I went through my travel agent since she works directly with Palace hotels. We stayed a total for 4 nights and 5 days, and just paid regular price for the last night. The first 3 days, we had vendor meetings scheduled, and the last day we finally had time to relax. We got to use ALL of the amenities each since we were staying on the property and were treated as if we were regular guests, so it was awesome that we got to try out all the restaurants and amenities and will know what to recommend to our guests. I'm more than happy to answer any questions, and I have really used this forum to answer some of mine, so I love to pay it forward! :-)