The comments about 'as long as there will be an agent present', to be honest for that to not be the case would be a pretty unusual situation logistically if the vendors aren't present either because then how would they access the property? You'd basically have the agent giving the buyers the keys and saying "off you go lads, bring them back when you've filled up the van" which I doubt the vast majority of vendors would agree to.
If you mean the agent literally following them round in every room, that probably won't happen either, agent will do a brief tour and then mill about downstairs staring at their phone.
If you mean the agent literally following them round in every room, that probably won't happen either, agent will do a brief tour and then mill about downstairs staring at their phone.