So, I really can't see what the fuss is about!!
If a pensioner goes from Bournemouth to Blackpool, then Bournemouth pays for it.
But that's fine isn't it, because the pensioner lives in Bournemouth, pays council tax, and thus effectively pays their own way!
Working on the same premise that what goes up must come down, that pensioner will [more than likely] travel back from Blackpool to Bournemouth, and Blackpool will pay for it.
But that's OK too isn't it? Surely that pensioner will not have done nothing while in Blackpool, so will probably have bought some goods, maybe visited a Restaurant and bought food, thus contributing to the local businesses of Blackpool, who will all have paid Business rates to Blackpool council, so the pensioner will effectively have paid their own way again.....
I know what you're saying Bungle, but I really don't see that the problem is as bad as some of those councils make out. Take Brighton for example with it's higher than average bus charge bill in the summer - from your LGA figures, which conveniently don't point out that while Brighton will have a higher cost in the summer months, it's costs will be significantly reduced in the Winter when no-one goes to visit - but that is by the by, because while more tourists are visiting, the local council is earning more money isn't it??