Perhaps make it only trigger a bar if there are at least two or three other people there, because one person, a party does not make.
|j||Johnny||6h||New Code Written Nightly. Not a GM.|
|a||Cerberus||2h||Head Builder & GM when I need to|
|And 20 more hiding and/or disguised|
It's for finding RP. No change is called for.
Read room descriptions. There are people there besides the one PC you can see. There are NPCs there too.
Make your own party. It's why you asked in the first place, isn't it? Give this gift to the other player whose character was alone there till you arrived.