Ahhh decisions decisions! Help. Should I get a mobile card machine bearing in mind there is an ATM at show and I don't plan on doing more shows this year, (but may do around chrimbo if this one goes well) Yes or no, YOU decide? Lol (big brother fan here)

Ahhh decisions decisions! Help. Should I get a mobile card machine bearing in mind there is an ATM at show and I don't plan on doing more shows this year, ( but may do around chrimbo if this one goes well )Yes or no, you decide? (big brother fan here)