No you dont need to, you should be able to accrue domestically on M&M but make sure you read what types of flights you can accrue domestically (codeshared or any flight etc)
some foreign programs are a bit shaky in that practice
such as Evergreen Club, I can accrue on CO
flights and redeem, I got a bargain by blowing EVA 35K miles on a CO
award ticket when CO
's mileage savers was not available and was asking for 50K or 60K one pass miles on same flights.
with Dynasty, I can easily get domestic DL
flights off my Dynasty miles at 25K especially when DL
skymiles is blacking it out.
But here is the catch with a foreign program. they often require higher fare levels of the domestic airline partner to let you accrue.
You can easily accrue your miles if you had lets say a regular skymiles card on the lowest DL
fares you decided to book and some foreign programs like full Y fares to let you get miles.
So its handy to have both accounts, so when you for sure know you can accrue miles in that booking class on your foreign card, use it, but if not use the domestic one so you dont have miles wasted
[Edited 2009-08-18 17:11:59]
[Edited 2009-08-18 17:12:18]
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