A CL65 TAXIES IN TO THE RAMP AREA DURING A NIGHT OP; FAILING TO HOLD SHORT OF TXWY G PER GND CTLR'S INSTRUCTIONS AT CVG; OH.

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FLT AS NORMAL FROM CMH; OH; TO CVG; OH. TOTAL BLOCK TIME OF TRIP WAS 41 MINS. I WAS SCHEDULED RESERVE AND WAS TO DO OUT AND BACK (CVG-CMH-CVG). THE CAPT I WAS PAIRED UP WITH HAD BEEN ON DUTY SINCE EARLY THAT MORNING. I THINK I ASKED AND HE SAID AROUND XA30 RPT TIME. I; MYSELF; ONLY A COUPLE WKS OUT OF IOE TRAINING IN A NEW ACFT. I HAD ONLY APPROX 75 HRS IN THE ACFT AND IN A NEW ARPT ENVIRONMENT. THE CURRENT OP OF THE AIRLINE WAS NEW TO ME. I WAS PREVIOUSLY FLYING CARGO OPS AND WAS NOT ACCUSTOMED TO PAX GATE RAMPS. THE ARPT CTLRS AND RAMP CTL PROCS ARE SOMEWHAT ROUTINE IN THE XFER OF CTL AFTER EXITING AND DEPARTING TO CERTAIN RWYS. THE SIT OCCURRED AFTER WE EXITED THE RWY AND WERE PROCEEDING TO THE RAMP/GATE. TWR HANDED US OFF TO GND CTL AFTER CLRING THE RWY. WE LANDED ON RWY 18L IN CVG. THE INSTRUCTIONS THAT I UNDERSTOOD WERE TO TAXI N ON TXWY T; L ON TXWY J; HOLD SHORT OF TXWY G; THEN RAMP TWR. WE PROCEEDED ON TXWY J AND AT TXWY G WE CONTACTED OUR RAMP TWR. RAMP TWR INSTRUCTED US TO ENTER TXWY J5. DURING TAXI IN TO GATE; THE RAMP TWR INSTRUCTED US TO CONTACT GND AGAIN. GND CTL CALLED AND WAS UPSET THAT WE DID NOT HOLD SHORT OF TXWY G AND STAY WITH HIM ON FREQ. GND HAD GIVEN US INSTRUCTION TO HOLD SHORT OF TXWY G AND THAT WAS IT. WE; AS A CREW; DUE TO OUR OP; MISUNDERSTOOD THE INSTRUCTION. NORMALLY AFTER CLRING THE RWY; ESPECIALLY ON RWY 18R/36L (A CLOSER RWY); TWR WILL HAVE US JUST ENTER THE RAMP AND CALL RAMP CTL; BYPASSING GND CTL ALTOGETHER. SINCE THIS WAS A LATE FLT; THERE WAS NO VISIBLE TFC DURING OUR TAXI BACK TO THE RAMP. THE PROC WE USED SEEMED APPROPRIATE AT THE TIME. HOWEVER; I WILL CLARIFY NEXT TIME. I THINK THE CONTRIBUTING FACTORS WERE: ONE TIRED CREW MEMBER THAT WAS THE MOST FAMILIAR WITH OPS IN THE AREA/ACFT. ONE INEXPERIENCED CREW MEMBER IN THE ARPT ENVIRONMENT (CVG). NONSTANDARD PROCS USED AT TIMES BY THE CTLRS AT THE ARPT; WHICH CREATED BAD HABITS FOR US. THAT THERE WAS NO VISIBLE TFC IN ANY DIRECTION NEAR THE TXWY; AND THAT TXWY G WAS BESIDE THE ENTRANCE TO OUR RAMP. IT IS VERY COMMON TO CONTACT RAMP CTL IN THAT LCL AREA. BETTER AWARENESS ON BOTH CREW AND CTLR WILL HELP IN THE FUTURE AS WELL AS STANDARDIZATION.