Thanks 
@blueAerix @SirMe @Disc @wizard_with_a_crystall_ball @sophia007161 That means my table is full.
I went ahead and reserved a table for us. They only open at 12pm so no point in showing up much earlier.
There’s still plenty of free tables to reserve at the venue (and tbh even just showing up should be fine, they said) so if another person wants to offer to DM, there’s room.