Is it reassuring to a certain type of student or parent?
I'd put my money on You bet! being the answer to that one. (Btw, anyone else have a niggling feeling that the flurry of, The mask-averse already a at the sociopathic end of the population in their pre-Covid lives, research shows stuff in the press recent is possibly a subtle way of trying to ensure compliance?).
Xenia, the issue is that having to shout at people raises the risk of droplet / aerosol transmission, compared with speaking at a normal level. And looking at the number of tables in those spaces, if the diners do attempt to engage in conversation, not only will they have to raise their voices to be heard across the gap, they will have to raise them even further, to be heard above the increased level of noise caused by people having to raise their voices in order to be heard across the gap And so on...