1) At no online poker room I have played, you can rathole. You have to usually wait some time before you return with a shorter stack than what you left with, typically about 30 minutes or so.

2) There is no bullying in cash games. If I have 10k and you have 1k at the table, we only play for 1k each hand. The 9k I have behind don't help me in any way, shape or form. Big stack bullying is a concept of tournament poker, useless in cash games. Absolutely useless. I have stated this several times. If you don't believe me, maybe you'll believe a "noted poker authority" Ed Miller.