Gin & Tonic have the following instruments:
drums
bass and bass amplifier
electric guitar, electric guitar amplifier, guitar effects processor
2 keyboards and mixer with 12 lines 4 bus and effects
2 voice microphones with supports and cables

Required instruments into the pub would be:
P.A. System (depending on environment characteristics)
Mixer 12 lines (2 with voice effects) and 4 amplified monitor lines
4 monitors
2 microphones with supports and cables for giutar and bass amplifiers
4 microphones with supports and cables for drums