  We continue the holographic exploration of the conformal manifold of 3d
$\mathcal{N}=2$ S-fold SCFTs constructed by gauging the flavor symmetry of the
Gaiotto-Witten $T[U(N)]$ theory. We show how to uplift the two-parameter family
of AdS$_4$ vacua dual to this conformal manifold to 10d backgrounds of type IIB
supergravity. We use these uplifted solutions to shed new light on the
mysterious nature of the infinite distance limit on the conformal manifold and
to study probe strings and D3-branes. This analysis uncovers an intriguing
structure of the $S^3$ partition function of the S-fold SCFTs which resembles
the giant graviton expansion of the superconformal index of 4d $\mathcal{N}=4$
SYM. We also show how to each member of the family of supersymmetric AdS$_4$
vacua one can associate a consistent truncation to 4d $\mathcal{N}=2$ gauged
supergravity and use this result, in conjunction with holography, to calculate
the large $N$ partition function of the 3d S-fold SCFT on compact Euclidean
manifolds. Finally, we generalize the supersymmetric AdS$_4$ vacua to a
four-parameter family of non-supersymmetric AdS$_4$ solutions.
