Christchurch's restaurant tram is officially back on track.

The tram's been out of action since the February 2011 earthquakes, but will hold its first dinner service this evening following repairs to the tram loop.

Managing director Michael Esposito says it's a momentous occasion.

"The best thing about it is just the experience you have on that tram. You're going around the city having a great time, enjoying fantastic food and washing it down with great wine as well."

Michael Esposito says guests should think about booking well in advance, to avoid the disappointment of missing out.