Remember that technical sessions are videotaped and posted after the conference if you're having trouble deciding between two. If a presentation will be repeated, it will be on Thursday afternoon.
If you attend a technical session, please fill out the evaluation form. Yes, the presenters do get to see the comments (after they've been transcribed) and comments about general issues were passed on to presenters this year.
If you're looking for a particular Esri employee, you can ask in the Showcase for someone to check their schedule--to see when they're giving a presentation or have 'island' duty.
When asking about an issue at one of the product islands, you may well get, "Unfortunately, that's not my area; let me see who's available." The people on the islands (like me!) are often not generalists.
As others have commented, don't be afraid to step up and talk to the Esri employees. At the product islands, we get told to not group together as it's harder for customers to 'break in'. Although some groups are valid as several people are listening to a customer, other times we're just chatting--waiting for someone to talk to us!
Technical Support and Customer Service are available in the Showcase.
The Showcase closes Wednesday at 6 PM.
Std Disclaimer: I work for Esri as a product engineer on the 'projection engine'.