Yes they needed that when I did mine, no problem.

If you take a taxi make sure they know where they are going, they will always take you to the normal Chang Wattana. Show them the new location. Make sure they drop you at the right gate or its a bit of a walk too. Make sure your landlord signs the sheet with their photo ID on it and take your rental agreement.

Public holidays 27th and 28th July it will be closed.

Id would allow a month to get all the documents, at least a month (if doing in Thailand) Its easier to get the visa before entering the Kingdom from your own country but check with the embassy in your country first. You can do this when in Thailand but you need time and will have to leave the country to get the visa, from a embassy outside of Thailand, eg Loas Vietnam.

I think Universities can process the ED Visa without you leaving if your want to do a degree course, but not a language school. You need to leave the country.

I may be wrong but my school said they provided a letter to show at immigration to cancel the visa. You cancel a week before.

Have a look on a UK Thai consulate website its all stated on there, I think you would be ok, but best to check. Give Hull a call they normally answer the phone and are pretty helpful.

Yes the 5000 needs to be in your account for 6 months it can be in 1 or 2 bank accounts it does have to be in them for 6 months.

Not making it easy are they.

Id cancel your appointment if you cant make it or you will be banned from making another appointment for a month and you might need it.