Event Management and Salesforce

Wow, what a can of worms.

You say you want to manage your events in Salesforce, where do we even start?

Event Types

What event functionality do you need:

Venue planning and management
Speaker planning and management
Ticketing
Payments
Refunds
Attendees
Attendee Details (eg asking attendees dietary or accessibility needs).
Transfers
On the day checkin
Application vs Registration
What info needs to be collected from attendees?
Do you need to communicate with attendees before, during or after the event?
Surveying attendees?
Recurring attendees?
Sporting event (if so, there are specific sports related event portals).
Peer to Peer fundraising (do you need to use their portal or yours).
Member functionality (eg content on your website only for event attendees or discount for members).
Multi day events.
Conference type events (where they book individual sessions)

Online ticket sales
Invoicing for bulk purchases
One person can buy multiple tickets to one event
- Do you need all ticket holder details
One person can buy one ticket to multiple events
One person can buy multiple tickets to multiple events (this one is hard).
On the day sales
Discounts
Coupons
Group Pricing
Additional options - like dinner.
Free tickets

Payments2Us is great and would suit a lot of events but it doesn't have coupons, discounts, dinner options, doesn't handle online only events well, only uses two payment gateways, or Paypal (no Stripe).

Gravity forms with Stripe payments
WooCommerce on its own or with something like Events Tickets Plus but note that it won't take details from multiple attendees
Eventespresso
Tickera - looks fabulous but not Salesforce integration yet - not even Zapier - so disappointing

Eventbrite - does not work well for repeating events. Does not integrate with Salesforce very well at all. Steer clear of this one.
EventArc - hmm, not really for me, it just doesn't gell as an app. Plus no Salesforce integration. They also have an app specifically for sporting events now.

If you are going for these type of apps, I'm not sure you really want to integrate them with Salesforce - you need a good reason to.