Can you solve the crossword and decode the hidden message?

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Across
  1. 4. EVER_ _ _ _ _ , a brand of battery
  2. 5. A key ingredient of beer (singular)
  3. 6. 18th letter of the alphabet
  4. 8. Nigel's contribution to the cocktail world.
  5. 9. One thing you need to bring to the hour of power
  6. 10. There is no I in this word
Down
  1. 1. Laura and Ren love to ... (Did you read our original email?)
  2. 2. Gotta get down on ...
  3. 3. The time the session starts
  4. 7. I am, _ _ _ are
  5. 10. 1+1 - W=