Originally Posted by
mahasamatman
Except that the answer to #4 is not quite right. United miles disappear after 18 months of inactivity, and Starwood's expiration policy is more than just "technically". They do enforce it.
Re Starwood, the answer is wrong for a second reason: they don't require a hotel stay, as credit card activity also resets the clock. From
the SPG T&C:
You will be considered an "Active Member" so long as (a) your Membership has not been cancelled (by you or us), and (b) you have had an Eligible Stay at a Participating Property within the previous 12 months, or (c) you have earned Starpoints by using a Starwood Preferred Guest Credit Card during the previous 12 months.