In real life holding is about as common as being hit by lightening.
Even when you do get a hold its usually just a vectored hold, not a
formal procedures. The only time you really get to fly holds is to
remote airports without ATC when the approach procedure requires a hold
for the procedure turn.

-Robert

I fly regional jets in the Northeast and I get assigned "hold as
published" on a regular basis; particularly going into JFK at rush
hour, or in any low IFR weather. PVD is another popular holding fix
when going into BOS. And yes we always program a hold into the FMS and
often back it up with conventional navigation whenever possible.