Support

About 50% of our event participants do send a paper check. 
This is also true for membership dues. That is, I need simultaneous support for both payment methods. 
Can I add these participants myself, as admin, or delegate to another person? 
I am currently using eventbrite and I like the features they offer, such as payment on-line or not (both allowed for same event), multiple tickets per person, multiple ticket categories per person, etc.   
WA with eventbrite-alike capability is what I am looking for.  

I need to preserve membership history, back 10-15 years. 
Could I somehow enter/import previous' years of membership records? 
Is there a way to enter, preserve, retrieve and compare membership logs for different years, or know for each member his membership history? 
I could not figure out if WA keeps old data (say, last year's memberships); it does not seem to have membership renewal -or I could not find it.

Spanish support would be a plus. 

Re checks - should not be a problem, you can use Payment Instructions field to explain to people that if they want to pay by check, they should register but not go through the online payment. They will show up as "pending" and you will change status into "confirmed" once you get the check. Same for membership dues.

Also, you can log out from your administrator access and register - "pretending" to be that person. We will be adding functionality for admin to register event attendees soon.

We will be introducing some ways to simplify this process too.

Re membership history - you can put it into notes, would it be sufficient?

Renewals - each member can renew in his own profile and we will be adding more robust renewal workflow in the next 2--3 months.

Spanish support - not something we can consider at the moment, sorry.