Play money tables are all hype, sure it's fun and free but your guaranteed to have at least 1 all-in every hand!!! Gets frustrating after a few minutes. Low limit real money tables at least provide honest players, unless they bluff you of course.
I was testing one such table on BetFred recently and got J-7, I obviously folded the duff cards...until J-7 appeared on the flop!!! That pot was only worth about $2 but it could have been mine