My first and only 1st class experience was on a business trip to the Middle East. I flew BAH (Bahrain) to RUH (Riyadh) on a Saudi Arabian Airlines MD90. The flight lasted all of 50 minutes, and they still served a meal (I had lamb, I think), but no alcohol!

The most unique experience of that flight was female flight attendant uniforms. Instead of the black abaya worn by women in Saudi Arabia (due to Islamic law), flight attendant wore a blue and yellow robe (similar to the abaya) and had a blue scarf covering her head (her face was not covered). You do not see this type of uniform in the USA.

The FC experience was not really that special, since I just flew business class from IAD to BAH on UA and BA just a couple of days before. I enjoyed that business class experience better.