ok, I'm a Vistana owner and new to Marriott. what are Pluspoints, how can one make use of 500 of them? thoughts?
They are just like any other points, but cannot be banked or transferred.
What can you book with 500 points if all of your weeks are used and you don't have any other Abound points?
The Plus Points are good for 2 years, so if your weeks are all used this year, there is always next year. You can also borrow from next year's points to complement the 500 points or rent points from others. As a reference point, many here would prefer 400 Plus Points vs. a $150-$200 gift card for attending a presentation.
However, there are locations where 500 points can get you pretty far in the offseason, especially Mon-Friday bookings. We occasionally do that for some FL locations during "hurricane season". If you live in CA (CalGal?) you can book 2/3 weeknights in Tahoe (Timber Lodge) in the summer in a 1BR/studio. You can book 5-6 nights in Vail at one of the Marriott Streamside properties in a 2BR during ~4 months of the year. You can book a full week in a 2BR at Hilton Head (Harbour Club or Heritage Club) or even 9 nights (Harbour Point) during a 5-week period in December and January. It really depends on where you live and if you are tied to school calendars, or have more flexibility.
Also, if you are Executive/Presidential/Chairman you get a 25%/30%/30% discount for 30/60/60-day-prior bookings which can stretch the 500 points further than mentioned above. I'm taking my daughter to visit some schools in Southern CA and booked 2 nights at Newport Coast Villas (2BR resort only) for 420 points after 30% discount. Obviously, it's subject to availability but we're looking at low season bookings here so the likelihood of getting a discount is higher.