Just a word of warning if you are thinking of taking kids to Martin Mere by train - the walk from the station to the Mere on the new footpath is not suitable for under 5's or pushchairs/buggies.
I took my 2 1/2 year old {who today has walked the full length of PArkgate and all around Inner Marsh Farm Nature Reserve} found it difficult and asked to go in his buggy {which he never does} and it was a nightmare to push.
At one point I was carrying the rucksack, buggy and child across a field!!