Museum seeks cash register and administrative software

We are looking for cash register and management software for our multi-disciplinary museum with event rooms for our own events and for rent.

We have the following requirements for the software:

• Cash register booking of admission fees and shop items
• Merchandise management
• Credit bookings
• Customer management
• Online bookings, including interface to online booking system
• Room bookings (= resource management)
• Internal, centralized, multi-user organization and process planning, event planning
• DATEV interface
• Windows-compatible, cloud-based if necessary

Two cash register stations and three back office workstations are required.

We are aware that there are probably few providers who can meet all requirements with one software package. We are hoping for sensible solution proposals, which may include partner products with functioning interfaces.