Good opportunity to book cheap flights from Europe to Asia. We start our trip from Stockholm or Mila

Good opportunity to book cheap flights from Europe to Asia. We start our trip from Stockholm or Milan, and finish the journey in Frankfurt or Paris. Target cities in Asia are: Hong Kong, Saigon, hotels in san jose costa rica Singapore, Osaka. Price for ticket start from 319 EUR.
Visit AirChina.es next chose Multidestino and enter the select hotels in san jose costa rica as above. When paying enter the discount code B8FPG8BEOKQ0 (valid until 23:59, 9 semptember) or BB77FRARL8R3 (valid from 00:01 to 23:59, 10 september).
I tried the second voucher today 19/9 for a multi-city trip starting from stockholm. However it mentions hotels in san jose costa rica only for the specific day and flying only from spain, if i understood correctly. Do you think that it will be dismissed or that i will have to pay extra after the booking?
Simon, your request is totally unrelated to this deal, please use any other website that sells tickets. Keep in mind that your ticket hotels in san jose costa rica my be quite expensive because many flying offers require passenger to return in 90 days, as well as Hamburg is not the most popular airport to start from thou no one is saying you may not get lucky!