I got a reply from Glen Esk Holiday Park confirming that they will be open from 10am to 4pm Wednesday to Sunday.

I will stop there on the way to NWB on Wednesday 22,

William:flag-bb:

The East bank track is continuous, and is a pleasant walk, but it does involve a steep muddy section where the path moves from river level to a very obvious good path following the field margin. To be honest we normally do a circuit parking near the petrol station, heading down to the bridge, crossing over the bridge, along the river upstream to the blue door and back down the west side to the village. That means we climb up the steep bit rather than descending it.

You will have to think in terms of downclimbing, facing the slope, especially if carrying a full pack and if it has been wet weather rather than simply walking downhill.

Thanks Brian. I will keep that in mind.
WIlliam:flag-bb:

It is probably only about 20m between the river level and the top of the slope.