As there are two of us from same address traveling -- we just opened an Executive Club Household account -- for each RT we will get a minimum of 23,xxx miles between the two of us. Either one (up to four in same household) can use the miles, either can add to the miles.

With a bit of mileage from AS or AA or a transfer from Diners or a bit of iDine we'll have miles for at least a couple of AA domestic tickets. Good for emergency use and then "releases" the UA miles I normally hold in reserve for a trip elsewhere.