Answer:
Enthusiasm - While working, keep in mind the customer and the benefit you give to him/her. Take cues from the customer's reaction and let that be the driving motivator giving you everyday enthusiasm.
Quality - Try to keep the quality level high, as here we do not only represent ourselves and our own skill set. We are one - a team, and therefore need to have constant, great quality of ice cream.
Cooperation - Every team is bound to have a better performance rather than working individually. Every and each one of you adds up to the other ones with individual qualities and skills. All of that in consideration provides an exceptional service.
Productivity - Seek to leapfrog your own personal benchmark. Try to be exceptional when making that ice cream. Do not envy your colleagues and always try to outshine what you did last time.
Safety - Safe and sound is the basis of our ice cream shop. If anything goes bad (on-the-job or personally) do not be afraid to reach out to your colleagues. Your problem or safety concern is a team problem too.