ref – https://www.natterandramble.co.uk/future-continuous-form-uses-timeline/

[will] + [be] + verb [present participle ] + ing

Use the future continuous tense for future actions happening over a period of time, especially when a specific time is mentioned. The future continuous tense also shows more certainty and likelihood than the simple future.

By this time tomorrow, I will be drinking margaritas on the beach.

We will be attending a meeting from noon until 3 p.m.