I am in the process of building my own island, you are welcome to it any time you want

Just jump on a cruise ship to Fiji and when you get there rip up your passports, they got all kinds of uninhabited islands down there

If you lie and make up excuses instead of just saying "No thanks" then you need to stop doing that because you are resentful now. Just say no! Who cares if they think it's unacceptable. It's very freeing to just speak the truth no matter how the other person responds