Tired and emotional is a semi-polite or humorous euphemism for drunkenness, so in this context it is implying that Sean's father was drunk at the picnic.
Context: "“I might be mistaken, but Sean's father looked a bit drunk at the picnic, didn't he?" Claim: "“I might be mistaken, but Sean's father looked a bit tired and emotional at the picnic, didn't he?"
Considering the context, is the claim true, false, or unknown?