I had 4 travel certs I was using to stay at the Ritz Carlton Penha Longo resort in Sintra this September, but now Americans can't get into Portugal. So I was going to use them to go stay in Southern California in San Diego, but my cruise got cancelled. I am now going to Thailand in June-no hope of them getting extended to then, right? I need to find something to do with them before that, or I will lose them, correct?