San Angel Inn (located inside the Mexico pyramid pavilion) is not involved in the remodel. It is a table service serving lunch and dinner.
The former outdoor CS was torn down and remodeled. A new building has been put up, which contains two separate restaurants:
Cantina de San Angel (CS) which serves lunch and dinner.
Hacienda de San Angel (TS) which is only open for dinner.
Mexico currently has two TS restaurants, one inside the pavilion and one outside by the lagoon, a CS restaurant in the same location as the lagoonside TS, and a lounge (inside the pavilion).
San Angel Inn is located inside the pavilion. It has no windows and no Illuminations views. If you want a view of Illuminations you do not want to eat there. You want Hacienda for TS or the CS cantina.