Low boiler pressure due to removed radiator

Hey! Quick one: removed a radiator from the wall to decorate a room. I’ve closed the valve (although I think one might be leaky cos the pipe drips a little even though I’ve capped the pipes off). The water pressure of the boiler is at the lowest gage point. Will I be okay to leave the radiator off like this for a couple of days while I decorate? Or will it damage the boiler? And am I okay to shower using hot water? Any advice would be much appreciated! thank you