Gcrr ~ Ace
RW 03 arrivals do fly overhead the airfield at 5000' before descending outbound on 234 degrees [speed 220kts] to a platform altitude of 2300'. At 10 nm outbound turn left inbound for the ILS.
RW 03 SID traffic maintains 4000' until clear of the inbound at 5000'.
The early right turn is to avoid the raising ground to the NE of the airfield. Even so there are still performance issues due to terain. "Bleeds off" flap 1 take off can be required with a fullish load and 14+ tons [EGPX destinations] of fuel for optimum performance for B738s
Once above the MSA 3500' an early left turn cutting the corner of the SID is often approved by ATC.
The RW 21 arrival can be interesting. An slightly offset VOR/DME approach with quite a steep approach for the last 6.5d is usually captains' only landings at night.