Hello!
Don't worry about it.
“あなたはいつ届くか?”→“あたなはいつ到着しますか?”
“私は25日の午後に届くだろう。”→“私は25日の午後に到着する予定です。”
届く=object、thing
到着=human、life
Sorry for the confusing explanation.
I arrive on 23rd in time of London.
And it is the night of 27th in time of London that I return to Japan.
You arrive on the afternoon of 25th and return on the afternoon of 26th.
Do you go to Buckingham Palace and Royal Albert Hall and the museum?
I'm looking forward to getting your reply.