25/26..here comes the Summer!

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Across
  1. 3. Use your towel to secure this! (7)
  2. 5. We all look forward to these! (8)
  3. 7. Tell huge fib to get extra sleep? (4,3,2)
  4. 8. Adds salt/pepper throughout the year? (7)
  5. 10. Summer footwear isn't a success? (4,4)
  6. 12. Don't throw this in if holiday isn't going well! (5)
  7. 13. Spending money abroad usually requires this? (8)
  8. 14. Sunbathe by a tree? (5)
  9. 15. Walk by harbour to go abroad? (8)
Down
  1. 1. Apply liberally! (6, 6)
  2. 2. Boys in suitcases go swimming? (6)
  3. 4. This is an important part of keeping your skin safe (6)
  4. 6. Boy polishes shoes in good weather? (8)
  5. 8. June 21st, December 21st (8)
  6. 9. Don't forget to pack this! (10)
  7. 11. Don't miss this if going abroad typically! (6)