https://www.marriott.com/loyalty/terms/default.mi
Originally Posted by MR
4.3.c. Platinum Elite Membership Benefits. In addition to all of the benefits Gold Elite Members receive, Platinum Elite Members and above are eligible to receive the following benefits:
iii. Platinum Elite Welcome Gift. Platinum Elite Members receive one Welcome Gift (of their choice where multiple options are offered) on a Stay of one or more consecutive nights as described in 2.1.d, even if they check in and check out of the same Participating Property within 24 hours. If the Platinum Elite Welcome Gift is not offered at time of arrival, compensation applies (see below). Choices vary by Participating Brand:
That depends on the property. At Courtyards (for instance, see table in T&C), you would get a voucher per member of $10 for yourself, and a second if you had another guest in your room with you for each day of the stay. In that case, the coupon wording is outdated.
At most of the full service properties though - one $10 coupon for the entire stay.