Even if it's not in the contract, it wouldn't make much sense to refurbish a resort shortly before re-sale. Simply because, they would be doing the refurbishment twice in a short period of time (they aren't going to sell a resort as brand new after being used for 2-3 years by the previous group of owners).
Let's take resort that has the closest expiration date, say BWV:
2016 - Hard goods
2023 - Soft goods (+7 years)
2030 - Hard goods (+7 years)
2037 - Soft goods (+7 years)
2042 - Expiration (+5 years)
So according the schedule, there won't be time for a refurb before expiration.