I wish them well.
Many or most Israeli banks won’t deal with U.S. citizens at all because of the paperwork the banks have to file with the IRS. The banks charge an arm and a leg for every transaction. If the couple does manage to open an account, tell them always to deposit cash via a machine, as the banks charge for depositing with the tellers.
@Gadolhatorah they’re not making aliyah – the OP clearly states the couple is going for a few years, R”L.