No C-ums 
The world according to Arp   MONDE
Sole man   HERMIT
Players try to hit triples with them   QTILES [Scrabble players]
Queue before U   QRST
Theme: phrases missing the letter C
Do some tweezing?   PULLUPA[C]HAIR
“I’ve completed the flag”?   [C]ROSSWORDS
Regional poem?   AREA[C]ODE
Sailing attire for {Jason}   [C]ARGOPANTS [Jason sailed on the Argo]
Note the retro flavor:
Tommy AGEE
ERLE Stanley Gardner
Ahmad JAMAL
AGOGO
Paul ANKA
Ballets RUSSES
LSTS
ISAK Dinesen
Mort SAHL
IRMA laDuce
Jean ARP 
Celebrated Talk like a Pirate Day?   USED[C]ARS [isn’t it "aaars" or “arghs”]
OSARATING:   
 
 Three grins = Excellent: Loved it; Two grins = Good: Enjoyed it; One grin = Satisfactory: A bit bland for my taste; One teardrop = Unsatisfying: No fun