In that case you know what to expect and that's good.
Its certainly possible to play with a GBBR but some may be upset by the challenge.
GBBRs are easier to disassemble but I think they need more care than an AEG.
I would strip, clean and re-grease a GBBR and mags after a game day but an AEG I would just make sure the spring is unbound, unload the mags and put the batteries away.