1 - 今晩はお宅にいらっしゃるでしょう。

2- 今晩はお宅においでになりますか。

I know the above are described as 尊敬語 (目上の人の行為を言う) Respectful Language for いる.
Used to refer to the actions of supervisors.

The question I have is, who says this and in what situation?  
For 1, I thought ましょう is used for 自分 ( The person who is speaking only ) So
who would say this to whom? A supervisor saying this to a subordinate froma
different clan/ company / family? " I will be at home tonight" But I thought
that if you are going to speak about yourself you have to use HUMBLE language
謙譲語 not 尊敬語?

For 2 I am guess a subordinate talking to someone superior to them from a
different clan/organization/family asking them if they will be home tonight,
am I correct?
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2021-10-18T18:48:37.933
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2021-10-18T18:48:37.933
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honorifics
今晩はお宅にいらっしゃるでしょう。今晩はお宅においでになりますか。