Being happy depends on you, your inner well-being, and not so much on having a partner. You can achieve happiness even without having a partner. Do not get obsessed in the search for a partner and forget to realise that happiness is at your fingertips, in yourself and in everything around you. Romantic relationships are not at all necessary to lead a happy life. While some people may find them fulfilling, others are much happier living on their own. Happiness is different for everyone, so take a good look at yourself and decide what it is that fulfills you. so yes you can but not everyone has the same mindset so for some you can't but for others you can.
Can you at least put a picture or write some of the paragraphs that showed a bit of the grandmothers opinion about there vacation that would help me and answer that question that your stuck on.