Creating a Bonvoy Vector Art Background in Expo can be achieved using the @expo/vector-icons package, which provides built-in support for popular icon fonts and tools to create custom Icon components. However, it seems that this package is not specifically designed for vector art backgrounds.

A better approach would be to use a library like react-art, which provides declarative and reactive bindings to the ART library for drawing vector graphics using React. You can render the output to either Canvas, SVG, or VML (IE8).

Here's a brief snippet to get you started:

import React from 'react';
import { SVG } from 'react-art';

const BonvoyVectorArt = () => {
  const art = [
    // your bonvoy vector art data here
  ];

  return (
    <SVG
      width={300}
      height={200}
      data={art}
      renderToCanvas={(canvas) => console.log(canvas)}
    />
  );
};

This code snippet uses the react-art library to draw a Bonvoy Vector Art background. You'll need to replace the art variable with your actual vector art data.

If you're looking for a more straightforward solution, you can use a pre-made SVG component or a library like react-icons which provides a simple way to use icons in your React applications.