As per the new Ambassador T&Cs dated September 1, 2016, you should have received the welcome gift, bottled water and fruit amenities.
"When staying on Reward Nights, all Ambassador and Royal Ambassador Privileges apply with the exception of upgrades, free Pay-TV film per stay, 24-hour guaranteed room availability, 8:00 am early check-in and complimentary mini-bar beverages (where a cost for these benefits is applicable). A Rewards Night booking must be booked under the IHG Rewards Club account of the member for him/her to enjoy the benefits."
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