I agree a walk is quite a way to walk for many people, but it is nothing much in a car, hence my 'assuming you can drive'.

Even so, we don't get queues to compare with some places in the US

Again, a quick web search suggests that on average each polling station deals with 1.300-ish voters. Allowing for some remote places with a lot fewer electors, one dealing with 4,000 must be fairly rare.