Booking Extras

I'm looking to be able to have people reserve & book rooms but also book tours/events we offer. It is not necessary for people to book a hotel room if they want to book a tour or attend an event. Is it possible to offer both hotel bookings & tour/event bookings?

Greetings
What about booking Hotel Services? This is exactly as booking a Room, with the same attributes:date,duration,price,guest etc.

I understand the Custom Modification comment for events external to the hotel, but what about Services?

By hour would be good. Either duration hours or using Start and End date with hour precision.
Obvious services such as health, beauty, spa, loan of items, etc.