Ticket to Ride: The circles spell out a word that is "split" that can go with Ticket to make a new concept.
17-Across. Showers someone with money?: MAKES IT RAIN. Train Ticket
27-Across. "Spit it out!": TELL ME ALREADY. Meal Ticket
44-Across. Cheese, beans, guacamole, sour cream, etc.: NACHO TOPPINGS. Hot Ticket
And the unifier:
58-Across. Voter's crossover ballot, and what can literally be found in the circled letters: SPLIT TICKET.
Across:
1. Snorkeler's destination: REEF.
5. Challenging H.S. science class: AP BIO. As in Advanced Placement Biology.
10. Chef's meas.: TSP. As in a Teaspoon.
13. Musical "Jeopardy!" category that's tough for many
contestants: OPERA.
15. Swampy area: MARSH. Louisiana Marshes.
16. Rower's blade: OAR. // Not to be confused with
66-Across. Portland's st.: ORE.
19. Undivided: ONE.
20. Lead-in to gender: CIS-. Cisgender, the antonym
transgender.
21. Use when there are no better options, say: RESORT TO.
23. City in northern Illinois: DeKALB. The city is a bit
west of Chicago.
26. Breakfast chain with bottomless stacks: iHOP.
32. Sheltered, at sea: ALEE. This used to be a crossword
staple.
33. Beef and pork: MEATS.
34. Clock-setting std.: GMT. As in Greenwich Mean Time. Everything you wanted to know about GMT, but didn't know to ask.
37. "Top Gun" nickname: MAV. Tom Cruise (né Thomas Cruise
Mapother, IV; b. July 3, 1962) portrayed Captain "Maverick" Mitchell in the
movie franchise. The sequel to the original Top Gun is Top Gun: Maverick. [Name # 1.]
38. Poolside structures: CABANAS.
40. __ Grande: RIO.
41. Potato spot: EYE.
42. Prepares for a recipe, as onions: CHOPS.
43. __ one's time: be patient: BIDE.
48. Car: AUTO.
50. Creamy chocolate dessert: MOUSSE. Yummers!
51. Sidelong glances: SLY LOOKS.
56. Afore: ERE.
57. "Is that __?": "Are you declining?": A NO.
63. Journalist Rather: DAN. Dan Rather (né Daniel Irvin
Rather, Jr.; b. Oct. 31, 1931) was the CBS Evening News anchor following Walter Cronkite's retirement. [Name # 2.]
64. Linney of "Ozark": LAURA. Ozark is a crime
drama. Laura Linney (née Laura Legget Linney; Feb. 5,
1964) portrays Wendy Byrde, the wife of Marty Byrde, who move to the
Ozark to launder money for a Mexican drug cartel. [Name # 3.]
65. Peak in Greek myth: MT. IDA. Mt. Ida is the highest
mountain on the Greek island of Crete.
67. Early Mesoamerican: OLMEC. Everything you wanted to
know about the Olmec Civilization but didn't know to ask.
68. Puny pencil: STUB.
Down:
1. __-com: date movie, maybe: ROM. According to Harper's Bazaar, here is a list of Rom-Coms that are both funny and romantic.
2. Clean air org.: EPA. As in the Environmental Protection Agency.
3. Cartoon shriek: EEK. // Not to be confused
with 39-Down. "That hits the spot!": AHH!
4. Skin spot that may be darkened by sunlight: FRECKLE.
5. Acct. balance, e.g.: AMT. Amount.
6. "The Incredibles" family name: PARR. Who knew the
cartoon family had a last name? [Name # 4.]
7. Scottish hillside: BRAE.
8. Egyptian fertility goddess: ISIS. Everything you wanted
to know about Isis, but didn't know to ask. [Name # 5.]
9. "That's not good!": OH NO!
10. Wide smiles: TOOTHY GRINS. Some happy animals.
11. __ Domingo: Caribbean capital: SANTO. Santo Domingo is
the capital of the Dominical Republic. Sadly, it was in the path of Hurricane Fiona. It was the first hurricane to make a direct hit on the country since Hurricane Jeanne struck in 2004.
12. Hosp. stop before surgery: PRE-OP.
14. "Take me __": AS I AM.
18. Small landmass: ISLE.
22. Free (of): RID.
23. Make late: DELAY.
24. Bilbo Baggins' age at the start of "The Lord of the
Rings": ELEVENTYONE. I guess you have to be a Lord of the Rings fan to get this one.
25. Panda's diet: BAMBOO. Everything you wanted to know
about Panda's but didn't know to ask.
27. Domesticated: TAME.
28. Jumped: LEAPT.
29. Kidnapper's demand: RANSOM.
30. Incoming flight stat: ETA. A crossword staple.
31. Pack animal: ASS.
35. Gnatlike insect: MIDGE. Everything you wanted to know
about a midge,
but didn't know to ask.
36. Pedicure targets: TOES.
38. Junk bond rating: CCC. Everything you wanted to know
about junk bonds but didn't know to ask.
43. Divides equally: BISECTS.
45. IM pioneer: AOL. America OnLine.
46. Bard: POET.
47. Jewish festival when the Book of Esther is read: PURIM.
Everything you wanted to know about Purim but didn't know to ask. Purim is a festive holiday and people
dress up in amusing costumes, even while they are on the job. The last
time I was in Israel, it was during Purim. Even the rabbi dressed in
costume.
48. Pollo __: grilled chicken dish: ASADO. Yummers, more
food!
49. Of a forearm bone: ULNAR.
52. Norway's capital: OSLO.
53. Milky white gem: OPAL. White opals are found in Australia. Hi, Kazie!
54. Supermodel Heidi: KLUM. [Name # 6.]
55. "Your Majesty": SIRE. I guess that would now
be King Charles III.
59. Tic-__-toe: TAC.
60. Assembly-required boxful: KIT.
61. School URL ending: .EDU
62. Indent key: TAB.
Here's the grid: