A man dressed in a thawb walks past Dassault Falcon executive jets, Dubai, United Arab Emirates Leonid Faerberg | Sopa Images | Lightrocket | Getty Images The organizers of the Investopia x Salt conference in Abu Dhabi — the brainchild of American financier and one-time White House press secretary Anthony Scaramucci and Dubai ruler Sheikh Mohammed bin Rashid Al Maktoum — expected to see 1,000 guests over its two-day event in early March. Instead, it got 2,500.  “We’re a little overwhelmed, but it’s a great sign,” one of the organizers told CNBC. Some others were annoyed. “It’s too many people. Everyone is coming to the Gulf now begging for money.…