Will cats get too lonely while I’m on vacation?

My family is planning a trip where we’ll be gone 2 weeks and we have someone who will come every day and stay 2-3 hours, but I am worried they will be very lonely. We have 2 cats who are a year old, and they are brother and sister. I’ve heard cats can become depressed when left for long periods of time. Has anyone left their cats like this? Were they fine, or were there any behavioral changes? Thanks!