A little rough. On both of us. Don't plan anything after school. Put them to bed earlier. Lots of snuggle time. (And my kid got "sick" on Fridays pretty often...

Not really much else to tell you, depending on school and your DCs personality, you may have "sharing" issues but then don't all three year olds?
Good luck.
And, can I just head it off now and say that no one needs to lecture OP and I on using PS3 because we're SAHM. I've already got it: insults inferred, rational arguments against this noted, defensive responses calmly stated, supportive follow-ups also noted and appreciated.
Thanks.