The house edge in Let it Ride is so high that they aren't going to care that much and you shouldn't be playing it (seeing other cards has not been shown to significantly reduce the house edge).

The typical house edge in Let it Ride is around 3.51%.. if you play the optional $1 side bet the house edge soars to from 13.77% to 36.52% depending on the casino pay table.

Let it Ride is a fun game.... problem is that it is a lot more fun for the casino