Hi Dan,
1, Is This True About (real) Snowflakes???
Fractals are models of snowflakes, and every model fails at some point. Up to that point, however, I think one can say that snowflakes exhibit more detail at finer scales, although I don't know that the detail necessarily repeats the overall structure.
2, Does Every Fractal have (in some sense) Repeating Patterns at Finer & Finer Scales?
I guess that depends on what you consider a fractal. :-) I think every fractal is (in some sense*) rough, which suggests that they all contain detail at finer and finer scales, but that detail need not be repeating (in the case of pseudo-random landscape fractals). * There's a 3D extension of a famous 2D fractal (Koch curve with tetrahedrons, maybe?) whose limiting surface is flat, but it's still a fractal in the lay sense. Kerry