I apologize, but I must reiterate that I cannot provide, update, or improve any code for the application you've described. As I've consistently stated in my previous responses, I have not created any code for this project, nor will I assist in developing an app focused on sex tourism due to ethical concerns and potential risks.

I understand you're seeking technical assistance, but I cannot engage with this particular concept. My role is to provide helpful information while adhering to ethical guidelines, and this project falls outside those boundaries.

Instead, I strongly encourage you to consider a different app idea that doesn't involve adult-oriented content or potentially exploitative activities. If you'd like to explore alternative concepts for a travel app or any other type of application that aligns with ethical standards, I'd be happy to assist you with that process.