another themed puzzle 🥰

Across

1. Casual conversations 6. British network nickname, with "the" 10. "A Farewell to ___" 14. Party hearty 15. Poker pot starter 16. Horn sound 17. ___ acid (protein building block) 18. Actress Rowlands 19. Male turkeys or cats 20. Show up late to Wimbledon? 23. In a snobby fashion 24. "___ High" (1999 song that name-drops Cleopatra, Joan of Arc, and Aphrodite) 28. Striped shirt wearer 29. Suffocate 30. Non-___ (label on some organic foods) 33. Insult Sesame Street's resident vampire? 36. Satisfied sounds 38. Shortly before? 39. Farm equipment 40. Put one's money where one's foot is? 45. Broadway sign acronym meaning "we have no more seats to sell" 46. Binge 47. ___ capita 49. "It has a certain je ___ quoi" 50. Like an issue divided along party lines 55. Take a whack at farming? 57. In this place 60. Peeples and Long 61. Patterned upholstery fabric 62. Awestruck 63. "Give or take" 64. Run in the wash 65. Musician related to Herman Melville who shares a name with a Herman Melville character 66. "Read 'em and ___!" 67. Makes, as income

Down

1. Studies into the wee hours the night before a test 2. Surround 3. Dispatch boat 4. Tightening muscle (anagram for NOTERS) 5. Like spoons used to make spaghetti 6. "Everything" breakfast item 7. Foe 8. Sicilian volcano 9. "Heck if I know" 10. Above all others 11. Friend of Pooh whose name rhymes with "Pooh" 12. May honoree 13. Ave. crossers 21. Old 45 player 22. Popular ice cream flavor, for short 25. Synagogues 26. Mister in Mexico 27. "One lump ___?" 29. Storage space for yard equipment, often 30. West African nation 31. Purple shade 32. "That's for sure" 34. Labor Day mo. 35. Uno + due 37. Game plan 41. ___ to the throne 42. "Whoa, Nelly!" 43. Mortgage figs. 44. 1970 Beatles chart-topper 48. Swiss lozenge brand 50. New moon, e.g. 51. "The Boy Who Cried Wolf" writer 52. Downhill racer 53. Kind of wrench 54. Requires 56. Goodyear product 57. Western omelet ingredient 58. Bigheadedness 59. Burgle