Break these down a bit:
going through the fire exits into the classroom/won't be allowed to use the corridors. - makes sense, reduces crowded corridors, many schools already use doors directly into classrooms
they've decided that children can't touch each other in the bubble - generally encouraged to keep their hands to themselves anyway in class as not everyone likes being grabbed, hugged etc. Normal quick contact is unlikely to be commented upon anyway ime.
no-contact games will be allowed - lots of games that invoke no contact, both at playtime and in PR. Government advised, lots of fun suggestions provided during lockdown from a range of PE specialists. At lower primary non contact is often used
sit on the carpet - no real loss anyway as many don't like to sit if the hard scratchy (and frankly unclean) carpets squashed up. Most, ime, prefer the chance to sit in a chair.
at desks facing forward - from the governments be fair lots of schools have forward facing tables and chairs as it is easier for all children to see the board when working
allowed to the toilet in a bubble slot - that will get stopped fairly quickly in lower primary as young children won't necessarily be able to wait; but again it was recommended by the government during lock down
they are banned from sharing food - this is always the case at any school I've worked at
clean up their own cuts and scrapes but if they can't you will be called to collect your child and clean them up yourself at home - this is OTT and not part of government guidelines. I suspect it will be dropped quickly due to practicalities. However I suspect many children of even 5 or 6 could wipe their own graze easily if asked to. - we often hand children a wet paper towel to hold on their own bump or scrape as it is
the school will report your child to the health authority if they shows signs of being unwell but will inform you of this - I assume this is for Covid checks and would be limited to thE symptoms linked to this; I wonder if it is part of the system of schools having their own tests to send home; I susceptible they have to be registered by school in some official site to say when they have been sent to be used
They are only allowed to walk home with the adult and not with their class friends - everyone should be social distancing so they should only walk home with their own household anyway. They can no doubt be with friends but only if 2m apart
They want us there for 9 a.m. in the morning/they don't want us to be early a obviously this is to help them manage their entry and exits to school. Many schools already don't allow children into the playground before school begins
they don't want us to go near other parents as we queue down the street - everyone should be SDing anyway as part of government guidelines; you shouldn't be within 2m of another household
they are encouraging kids to go through the gate by themselves and say goodbye to their parents at the gate - makes sense and lots of schools already do this; if it's new to your school then they will build up to it (see the use of the word encouraged)
the teachers are allowed to help children with work but have to stay at least 1 metres away and can't help them for no more than 15 minutes - this is the recommendation on school risk assessments sent by the Lea here (from the government) To be fair 15 minutes would be a long time to stand/sit next to one child in a lesson anyway unless a TA working with a specific child/children 1m isn't that far away either if you measure it. Lots of children don't like an adult stood much closer than that as it is.
They won't be having assemblies - part of government guidelines to fit it with the large gatherings
no school meals - must be an issue with the school kitchens. We can only offer cold sandwich bags initially due to the canteen, which is located at the next school (not ours) and we also have a lot of vulnerable lunch staff due to their age or other health complications. We can't use the main hall for lunches due to it being too crowded (same as assemblies reason) and we can't realistically get the hot food from next doors kitchen into 9 different classrooms at our school.
Ithat people can't pick your child up from a different bubble - the general SDing rules are that you cant be within 2m of someone from another household so that means someone else picking up your child could be a safety risk
Some of these rules will not really be fully adhered too, they'll be relaxed once back in school. Some are part of the general SDing between households rules that everyone should be following right now anyway. Some are due to the practicalities of specific school layouts, etc.