We will stay at FS Mauritius pretty soon and will also visit O&O and I promise to report once we are back home.

For us it seems as if O&O would be a better choice for beach, F&B and kids activities but we still chose FS since we are pool rather than beach people (private pools for all FS villas + great looking main pool) in addition to preferring the general look/design of the FS villas over the O&O suites, with the exception of the O&O villa which looks stunning. In addition O&O was significantly more expensive.