ACROSS

 1 With little slack

 5 Alternative to a chairlift

 9 Prelude to ___ (Meg Ryan film)

14 Resort city north of Lake Tahoe

15 100-meter, for one

16 "Give ___ - don't pollute!"

17 "While" lead-in

18 Sandy hue

19 Big name in Thanksgiving parades

20 Congratulate, in a way

23 Judge of the Simpson trial

24 Ending for "verb" or "malt"

25 Persons full of self-importance

29 Certain stopping point

31 Wolf describer

33 Big Hollywood talent agency

34 Accompaniment for a fife

36 Small land mass in the water

39 Like grapefruit on the tongue

42 Like a saint's head

43 "To err is ___"

44 Jumbo deer

45 Brouhahas

47 Abate

51 Gunshot evidence

54 Pot pie veggie

56 Frequent visitor to The Beatles' sessions

57 Cute shallow water creature

60 Art prop

63 Ambassador's skill

64 It's deserted in fantasies

65 Like a popular YouTube video

66 At any point

67 Annoy via sweetness

68 Dickinson or Post

69 Not at all difficult

70 Vats for frats

DOWN

 1 Timid by nature

 2 Add bubbles to

 3 Remove a clog from

 4 The Wizard of Oz dog

 5 Allowable weights

 6 The Dating Game contestant

 7 220-by-198-foot plot, e.g.

 8 Hot rye sandwich

 9 Transmission repair franchise

10 Army uniform material

11 Beijing 2008 org.

12 Chinese restaurant sauce

13 Elm, Main, Bourbon et al.

21 Mark up, as a score

22 Discrimination against senior citizens

26 Search, as the horizon

27 "Beverage crystals" since 1957

28 Unhappy

30 The Simpsons bus driver

32 Big name in lawn care products

35 Smear over

37 Hogan's Heroes milieu

38 "Come here often?" e.g.

39 Barn bundle

40 Breeds

41 Favorable omens

42 "And I Love ___" (Beatles hit)

46 Creditor

48 Muss up, as someone's hair

49 Put a snake in a drain

50 Slammers

52 Absolutely perfect

53 Dilly-___

55 Contest hopeful

58 Volcanologist's study

59 Clark or Butkus

60 The night before Christmas, e.g.

61 Align the crosshairs

62 What many a male Indian is called

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