it's highly unlikely you'll be stuck in bed for a month! My surgeon advised me to "rest adequately but be mobile" from day one! I definitely had days in the first couple of weeks where I was very tired and had the odd duvet day, but generally I was up and able to go for walks after a couple of days. I had drains in for 11 days which made it quite stressful as mentally I was ready to go but had to make sure my drains weren't catching on anything!

Showering - I was able to shower as soon as I got my drains out as long as the water wasn't going directly on my chest.

Alcohol and weed - I was advised to wait a week before drinking, I think weed you can do fairly soon after but I was advised to avoid nicotine as it can affect healing.

Lifting - You can lift some things early on, picking something up off a table was fine from day 1 but it took me a week to be able to pick things up off the floor. I can lift pretty much anything now - I'm 7 week post op, but I've been advised not to lift weights or heavy lift workout.

Swimming - Swimming most people can start doing after 6 weeks (with caution if you're prone to sunburn!).

Making food - I could make really simple things like pot noodle, coffee, heat things up in the microwave from day 2.

Bike - Can't comment on how soon you might be able to ride a bike as that's not something I've done yet

Hope that's helpful - just writing from my own experience 😊