A friend of mine offered me a buddy pass to use for my next trip to Europe, however I'm a little skeptical after I read some of the reviews online. I understand we need to be flexible, that's why I decided to use it to Paris VS other locations after checking the Delta website and found that there are two flights to Paris every nights. It would be very appreciated if someone can tell me what are the odds of running into issues if we plan to use the pass outbound on April 28th which is a Friday and inbound on May 4th; the following Friday.

Thank you.