ACROSS
1. <wind instrument> PANPIPES = PIP inside PANES
6. REEDY after G = GREEDY <wanting a lot of food?>
9. <traditional state> CUSTOMARINESS = (-cau)CUS TO MARINES S(-erving)
10. <gown> KIRTLE = (-s)KIRT + LE
11. <rest> BREATHER = (BAR THREE)*
12. <minor infraction> PECCADILLO = (CAD ILL) inside (PE CO)
15. O PTS = OPTS <votes, for example>
16. D RUM = DRUM <barrel>
18. (THAT CATERS)* = AT A STRETCH <only when absolutely necessary>
21. ⭯ROUTE⭯ outside RID = OUTRIDER <escort>
23. <seduce> ENTRAP = ←PARTNE(-r)←
25. MICROCLIMATES* = COMMERCIALIST <in support of business interests>
26. "SIGNET" = CYGNET <baby bird>
27. T R ENDING = TRENDING <going viral>

DOWN
2. <credit> ASCRIBE = AS CRIB + E
3. <propose> POSIT = POST outside I
4. PRO SEED D A = PROSE EDDA <compendium of Norse mythology>
5. <pasta dish> SPAG BOL = SPA + G (BOIL - I)
6. <perhaps mountaineer in charge> GUIDE = "GUYED"
7. <conductor> ELECTRODE = RODE under ELECT
8. <drop> DESCENT = "DISSENT"
13. <set crew> CAMERAMEN = CAME + RAMEN
14. (THETA + K) inside ONE = ON THE TAKE <accepting bribes>
17. <vulgar> RAUNCHY = Y under (RANCH outside U)
19. (I COT) under APR = APRICOT <fruit>
20. <humble> CHASTEN = C HAS TEN
22. <lived> DWELT = ←T LEWD←
24. A inside ←DIRT← = TRIAD <threesome>