I think the government's preference would be for full compliance so no fines were necessary. In practice there will be some non-compliance (well, quite a bit actually from the selfish, the disbelievers or those that like to challenge authority wherever they can- and I'm not counting the few cases where 7 or 8 people meet up for a family birthday), so the hope is that a few large fines reported in the press will deter others who are considering breaching the rules/law.