在cruisedirect上定邮轮后的问题，求解

已经定好了邮轮，200刀的定金也已支付。

昨晚收到封邮件，内容如下：

Congratulations on Booking through CruiseDirect.com! Our records indicate that the deposit has been posted for your upcoming cruise on MSC.


MSC is now requiring that only US and Canadian Citizens fill out pre-registration information prior to sailing. It is VERY IMPORTANT that you go online to the following site to complete all of this information as soon as possible. MSC Cruise Lines will not issue your tickets until such time as you complete the required information. If there is a field that does not apply to you please be sure to enter N/A.


If you are not a resident of the US or Canada, you will need to complete your check-in at the pier on the day of your cruise.


Please click on the link below.

http://www.msccruisesusa.com/us_en/Already-Booked/WebCheckin.aspx


Once your final payment is due we will process your payment using the card you originally used to make your deposit. If you would like to use a different credit card please contact us on the number listed below or use our website's Live Chat.


Thanks for Booking through CruiseDirect.com.


请问各位，这封信是要求我在MSC网上先注册吗？我持的是中国护照，不是美国护照，这封信到底是提醒我填居住地的时候填美国还是填中国呀？