Such a beautiful, versatile piece!  Rather than using it as a serving cart, I use it as a stationary "buffet" table.  I removed the rolling wheels and replaced them with pretective felt pads so that it doesn't scratch my wood floor.   I place my fruit baskets and freshly cut flowers arrangement on the top shelf, and a couple of bottles of wine on a wine rack on the lower shelf.    Each shelf has a weight limit of 40 lbs so I make sure not to put more than 8 bottles of wine on the shelf.