ThinkProgress catches Mitt Romney deriding President Obama for taking a vacation on Martha's Vineyard when he's going to be on Martha's Vineyard at the same time:

Republican presidential candidate Mitt Romney repeatedly has attacked President Obama’s upcoming trip to Martha’s Vineyard, saying Obama should “devote some time” to jobs, “not just going to vacationing in Martha’s Vineyard.”...Romney’s Vineyard jab is ironic considering that he is scheduled to be on the chic Massachusetts island the very same day as Obama. The Boston Herald reported in late July that Romney planned to hold a $2,500-per-person fundraiser on Aug. 27, just across the island from where the Obamas are staying.

For the record: I think President Obama's Vineyard vacation is a terrible idea. Of course, the reality is that every presidential vacation is a working vacation, but the image of the president running to the lap of luxury so soon after S&P downgrading us is terrible campaign messaging. Thing is, the president is kind of damned either way; if he were to announce a "presidential staycation," he'd bring a cardigan-wearing Jimmy Carter to mind. It's a fine balance, but I think Martha's Vineyard is a bit too luxe for the moment.