关于在美国皇家加勒比定船票

我查了一下美国加勒比的官网，如果选择55+的年龄，价格和不选要相差1000美金一间房，选择55+ 下面的条件是Guest over 55 may be eligible for exclusive rates. We want to make sure you receive the best price offer possible. A valid driver's license, state-issued ID or current passport will be required for validation at the pier.，那意思我是用护照证明就可以了吗?然后如果选择view summary of changes，价格下面出现这样一段话：Prices shown reflect the Exclusive Rate that you have selected. A valid driver's license or state-issued ID; U.S. or Canadian military ID; or U.S. or Canadian local, state or federal law enforcement, fire department, or EMT employment badge or ID must be presented at the pier to validate eligibility for the applicable Exclusive Rate. If eligibility cannot be validated, you will be charged the standard rate or otherwise will be denied boarding.然后点击价格准备输个人信息的时候，她会让你再次确定是55+的，要求就是之前第一段文字。请问各位，我是不是可以预定老年优惠呢？最后在码头checkin得时候就用中国护照？谢谢。