You can go to Bob Marley's - it's closed July 12/13, but has plenty of availability for multiple group sizes July 10/11...
You can also go to Pat O Brien's - again, it's closed July 12/13, but has plenty of availability for multiple group sizes on July 10...
It may be that having those restaurants closed on weekdays is stressing of the City Walk capacity...
PS - Vivo's has capacity every night July 10-13...I'd have to check "the biggies" closer...