Memory maker for off site no MB

[jm106]

I read that if I get MM as an off site guest I would get a RDIF card to be scanned for our pics.
We are going with extended family, some days spent together and some days or part of the days we will separate. Will be we be able to get more then one RDIF card associated with our account so when apart we can each still use MM?

Thanks for any help