Royal map cryptogram, part I

123456789101112131415161718192021222324252627282930
Across
  1. 8. A floral place of perpetual fire. (5,4)
  2. 12. An attractive mutant. (7)
  3. 13. Reversing electricity. (11,7)
  4. 15. A queen's small mat for her cup of tea. (5,7)
  5. 17. Slung out of an avenue. (4,5)
  6. 18. Everything moves except traffic. (4,4)
  7. 20. Honestly without cheating. (4,3,6)
  8. 21. Carefully consider your spelling. (8)
  9. 24. Surrounding everything. (6,2)
  10. 26. A thing out of this world. (7,9)
  11. 27. Transformed tubes. (7,5)
  12. 28. I can't find my pillar. (4,7)
  13. 29. Synonymous and homonymous to indestructible. (11)
  14. 30. Ducts covered in glue. (6,5)
Down
  1. 1. Endlessly estimating intermediate values. (13,7)
  2. 2. PET bottle on fire. (5,7)
  3. 3. Respectful skyscraper. (6,5)
  4. 4. Always a decisive map. (6)
  5. 5. It can only go up after this. (8)
  6. 6. Uninterrupted sideways water. (14)
  7. 7. Messy reactors. (10)
  8. 9. Unnecessarily complicated ice. (6,5)
  9. 10. Neither solid nor liquid. (6)
  10. 11. Two shots over par, good game. (6,6)
  11. 14. Swords of a king. (3,5,6)
  12. 16. Backvvards. (10)
  13. 17. Calm but salty waters. (6,3)
  14. 19. Not before changing direction. (5,4)
  15. 22. Don't think outside of it. (2,3,3)
  16. 23. Miraculously turned into wine. (12)
  17. 25. Struck an engine part. (6,5)
  18. 26. Hissing in a hole. (10)
  19. 27. Missing alpinism. (15)