[cookcounty]

"Did the Iranians get their money back and then possibly reject the deal??

IIRC, sanctions and money will be released later this month.

[nuconvert]

The key date for Iranian sanctions relief is Implementation Day. Importantly, there is not a date certain for Implementation Day. Rather, it is dependent upon the verification by the International Atomic Energy Agency (IAEA) that Iran has successfully implemented its many nuclear-related obligations under the JCPOA.
Iran is to begin its implementation of these measures after the Iranian parliament approves the accord, and Iran will notify the IAEA of its anticipated date for the full implementation of these measures. The IAEA will then inspect Iranian nuclear sites, and the IAEA will issue a formal notification that will constitute Implementation Day.

http://www.lexology.com/library/detail.aspx?g=c119497b-02bd-41e1-9f4c-83645747472b