When someone has spent time in a hospital no matter how good the staff is to them or the experience being pleasant the only place they want to go is home. The caregiver may need to help with keeping the person safe as they learn to walk with a walker, or a cane, get themselves enough strength to take a shower, prepare a meal, keep track of follow up appointments and make new ones.
After discharge, you'll go through a transition of care. That means you will now have a different level of medical care outside of the hospital. For example, you may go to a skilled nursing facility if you need some level of further care and are not yet ready to go home.

Being in bed for any prolonged period can leave patients with little muscle strength, making them vulnerable to falls and accidents. They may be too weak or listless to comply with discharge instructions, and the immune system may still be compromised, opening the door to infections.

Fatigue is often normal after having surgery. Typically fatigue improves as the recovery period progresses. ... Exhaustion, rather than just feeling fatigued or tired, may be present in the first few days following a major surgery, but should not persist past the initial recovery phase.

Here is a useful guide for regarding hospital discharge
Hospital Discharge Planning: A Guide for Families and Caregivers

Our care professionals are also available to sit with your loved one during a hospital stay for as many hours as you require.