There are no promotion or relegation rules - Thomas and Dave just decide who goes up or down.
While rules exist (I'm sure) the one thing I have liked about the FVSL is most often they are flexible and reasonable with the desires of a particular team/club to remain where they are or to go up or down.
Certainly at the lower and older levels.
They try to do what's collectively best for the league, the team and its players.
That said, if you decline promotion I believe you need to scrap like 2/3rds of your roster the next year though.
That all said, I'm not sure where they stand with the one club rule in Premier but that was the one area where normally that was pretty firm.
At one point anyway.
My two bits,
FVSLforerever
I just saw that the FVSL All Stars are playing WFC2 March 15th.
You'll never guess where.
Sorry Thomas...