I have never charged anyone for points. The only thing not up for discussion is that we take the Master Bedroom.
We take an annual kid-free trip with friends every fall. November 2017 was Vero Beach/SSR (for
MVMCP). Our friends paid for their own tickets, air fare, food, and for the entire rental car. We covered the points for the 2BRs at both locations.
I took my niece, her husband and two grand-nephews for 9 days in Jan/Feb 2018 in a 2 BR at SSR. My niece and her husband had indicated that they wanted to do WDW someday (I had taken her multiple times as a child), but they would like me to be there to plan it all. It took a full year's points + a few more to book it. I was afraid they would flake out on me, so I borrowed from 2018 UY for the November trip to VB and used 2017 points for the niece trip. Once they bought airfare I felt a little better. One night while she and I were walking back from DS, she indicated that she and her husband would love to come down for a weekend, just the two of them. I let her know the going price to book SSR (she liked the location and didn't want to stay offsite), from CRO, and the hard costs for me for this trip ($7.66/point x 266 pts.). At that point she was a little taken aback at the cost. A couple of times prior to the trip they casually mentioned that the baby could sleep in my room. I quickly nixed that idea. I needed a quiet place to go for alone time. My kids are grown (DD19 and DS23) and being with an ADHD 6 year old and an 18 month old 24/7 could be a bit trying on my patience - not to mention the ADHD husband.
I think too many people think that once you buy a timeshare, it doesn't cost anything to go there. I wanted her to understand that there are very real costs involved and that I wouldn't be gifting her points every time she felt like a vacation. I love her like my own, but her DH can be a bit of a challenge at times. (DH refused to go with us because he said he couldn't stand to be with her husband for 9 straight days).