If i have 21 bitcoins. I will travel around the world and buy tickets to tomorrowland with my friends.
you are just wasting your bitcoin because if you have that so much money and you dont know where to use it , for me or my suggestion would be better than your idea , just hold it until one day you can use it for some emergency purposes because it will help you 21 bitcoin is so much money or try to reinvest it so that you can earn more than that.
Okay using it for travel and never wish your bitcoin will come back in your wallet, and I think that is very bad just spending your bitcoin for the travelling. invest them gain profit and you can use the profit to traveling in everywhere you want. without losing your amount.