有一点可能有人会问的，今年的30N double成60N拿到了milestone之后，这60N rollover到明年，那是不是能直接拿明年的milestone？
根据官方的解答是不行的，必须本日历年的N才能计算milestone。
10. Do the elite rollover nights count towards achieving night milestone bonuses?
The elite rollover nights will only count toward a member achieving the next status tier.
To achieve the annual Milestone Bonuses the member will need to have stayed at least 40 nights within the calendar year and elite rollover nights will not count toward that total. For the 30,000 Hilton Honors Bonus Points milestone at 60 nights, a member will need to have stayed at least 60 nights within that calendar year.
These elite rollover nights will also not count toward any other type of stay bonuses or status offers (e.g. promotional offers, elite status fast tracks, status match, etc.).
