如何从奥林匹亚航空拿票？

我在奥林匹亚航空(http://www.olympicairlines.com)上订了两张票，是从罗马到雅典的，填写完信用卡号等信息后，该如何付钱拿票啊？ 网站提示的信息如下：

E-Ticket

You will receive shortly in your e-mail address, confirmation of your Booking, stating your Booking Reference and your Electronic Ticket Number. Please proceed directly to check-in of the departure airport with this confirmation document.


Check in deadline :

Domestic flights and International Short & Medium haul flights, 45 minutes prior to departure

International Long Haul flights, 60 minutes prior to departure.