HARTFORD, Conn. — Connecticut’s third reopening phase is set to begin Thursday, a milestone during the coronavirus pandemic that is getting a lukewarm reception from some business owners and arts aficionados.

A number of restaurant owners say they won’t be able to reach the new 75% capacity limit for indoor dining because they don’t have the space, primarily due to the requirement that tables be at least 6 feet apart. The indoor capacity maximum is being increased from 50%.

Indoor performing arts venues will be allowed to open beginning Thursday at 50% capacity, while outdoor event venues will be allowed to increase their capacity from 25% to 50%, with required masks and social distancing at all locations. But many theaters and concert venues have decided not to open this week, as shows already have been canceled and many say they can’t make money with half-full facilities.

The Phase 3 reopening comes as Connecticut has seen a slight uptick in coronavirus cases. Nearly 140 people were hospitalized as of Wednesday, up from 50 from a month ago and the highest number since late June.