I do agree with you that even though this sales letter is more short and to the point, it does the job decently for someone who is interested in traveling.

A few points that could have been added to the letter to make it a little less "sales focused" and more "customer focused" could have been giving some detail on how this could benefit the customer.

Maybe even a catchier attention grabber at the beginning could be beneficial.
"Do you miss having your toes in the cool water and feet on the warm sand? We're welcoming you back with this offer of....." could have appealed to the customers senses more!

You did a great job on your post this week and applied it perfectly to the weekly reading as well!