Is there anything new on this? It seems like there just needs to be custom fields available for each registration type instead of ONLY on the registration forms. The same options would easily allow for having there be extra costs (for a la carte registration), just make a selection (such as vegetarian or not), or specific information from that just one type of registration.
We had to set up two separate events last year to handle the full and a la carte registrants. We charge a flat fee for an all inclusive registration (both members and students), but still need to know which sessions they want to attend. But that isn't helpful to show as any additional costs.
For a la carte they have choice of various aspects which work fine with the check box or radio button with costs.
But it obviously makes it more complex to limit registration to have two separate 'events' that are actually a single conference. Having a way to select fields (e.g. with cost vs. not with cost) for a given registration type would allow to combine into a single event and should give enough flexibility for many other alternatives.
The president isn't one who typically administers the website but his posts are put on there. This would be better to be able to change or just eliminate if clear who it is from.