Because of the airfield's proximity to the coast, the sea breeze can move in rapidly resulting in a surface wind shift to north easterly. The sea breeze undercuts the main flying wind, so the wind you experience en route or even in the circuit may be quite different to the wind on final approach, even 180 degrees different. The radio may not be manned so there may not be any warning of this situation - you just have to watch the windsock, including on final approach then take appropriate action.
I suggest that as you are new to strip flying, you keep your aircraft's weight down, i.e. no more than one passenger, no luggage, and reduced fuel (if that can be safely done). Also, be prepared to go around if there is any likelihood of landing deep due to excess height or speed. Approach and landing judgement can be more difficult on an undulating or sloping strip. Note especially there is a downslope on 04 and in fact a PA28 overran quite recently.
Cromer is a very agreeable airfield to visit. It is adequate for a PA28 but stay alert and treat it with caution.