FTTC - Is an engineer home visit really necessary?

[#1]

Hi, I've recently upgraded my Plusnet package from a legacy standalone dsl product to "Unlimited Fibre Extra" including line rental on a 24 month contract at £24.99. Plusnet sent me an email on 3rd May confirming the change and stated that the new package will be active on the 11th May. Well, 11th May came and went without this happening and I received no service activation confirmation email. 

Having checked my account I can see that the change over still appears to be pending. Under the "open questions" button there are a series of messages that seem to contradict the emails I have received. One dated 4th May says that my activation date wil be the 17th May instead and that an engineer visit has been scheduled and that I should ensure that I will be available to allow access. Part of the appeal of FTTC for me was that I wouldn't need an engineer visit! I'm keeping my existing BT (currently) line and number and just transferring it over to Plusnet which is owned by BT. Surely an engineer home visit isn't necessary?

Openreach's website itself states " For new FTTC installations, an engineer will need to go to the local street cabinet. If your customer doesn’t need a new line we can activate the service without going to their home or office. " That seems to confirm what I thought. Can anyone verify this? What's the usual procedure for new FTTC connections? I was under the impression I could set it up myself. Also, what does CAD+1 mean?!

Thanks for your help.

[#2]

@Moog 

I don't know for certain, but maybe an engineer visit has been booked in just in case it is required?

Perhaps the Openreach engineer will make the changes in the cabinet, (and exchange?), and then call you for you to check at the time that all is working OK, without necessarily visiting your home? You would obviously have to be at home at the time to test this.

The alternative could be that the engineer does the work and assumes that all is good, but something has gone wrong. You would then arrive home to find that you had completely lost service, and have to wait a few days for it to be looked at?

By "legacy standalone dsl product", do you mean that you are moving from ADSL, (with BT), to FTTC, (with Plusnet)?