One issue with attracting more German/Dutch visitors is how they get about once in Cornwall should they fly. The hire car options are quite limited at NQY - I tried arranging just such a set up for German friends last year, but they ended up driving instead... and found it enjoyable, much to their surprise. Canterbury, Stonehenge, Glastonbury, Clovelly - they found as many sites to see on the trip down and back as they did in Cornwall.
The whole Emmett/Grockle terminology is a light hearted nickname. There is however genuine frustration when it comes to the influx of summer visitors.