マリオットも2018年第1四半期グローバルプロモーション
「 MegaBonus Up To 3,000 Bonus Points」を発表しました。
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Get up to 3,000 bonus points per stay starting with your second stay. Register through March 31, 2018.

Register by March 31, 2018
Stay* at any of our participating hotels and resorts worldwide between January 16 and April 15, 2018
Get 2,000 bonus points per stay starting with your second stay, plus an extra 1,000 bonus points when your stay includes a weekend night. 50,000 points max
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https://www.marriott.com/rewards/promotion.mi?promotion=MA18&aff=MARUS&affname=1100l539&co=US&nt=PH