Where in the world are Billy and Sara?

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Across
  1. 3. The Bride and Groom visited the Hofburg in this European country
  2. 5. The Newlywed couple visited Gardens by the Bay in this Asian City State.
  3. 8. Billy and Sara visited a Monastery that has been brewing beer since 1142 in this Bohemian country
  4. 9. The Bride and Groom got engaged in the largest city in the world, in this country.
Down
  1. 1. Billy and Sara Visited two of this Mediterranean country's 6000 islands.
  2. 2. Sara and Billy ate fondue in this mountainous European country
  3. 4. The Bride and Groom visited a 46 meter long reclining Buddha in this southeast asian country.
  4. 6. Sara and Billy swimmed in the Indian Ocean visiting this country of 17,000 islands.
  5. 7. The happy couple played golf and enjoyed a lazy river in this Caribbean country.