Beyond a few groups who were just looking for a place to do their own thing, religious cooperatives and the like, there's no sudden flood of mass immigration. People mostly don't like uprooting themselves from their routines. Economics wins out, though, and cheap land and clean water and breathable air are all very desirable commodities.
By the time Cam decides he's done with Yod and the government of Mars is here to pick him up, there's something like fifty thousand people on Yod. That number is expected to go up very fast, though, and Yod will go through the same process Cloudbank just did when it passes one million.
Hello Mars! Cam has been looking forward to this for ever.
He won't be starting from zero. Mars is already covered in various lichens, algae, and bacteria designed to steadily churn out oxygen. Parts of the red planet look... Well, not green, but purpleish. Luckily, these are designed to die off in days when the conditions get closer to Earthalike. The exact instructions are in his information packet and the head of the terraforming project is on call and monitoring.
Lovely! He'll just get started right now on the packeted instructions. How kind of them to provide such detail.
The galaxy's tallest rollercoaster, a nine-minute ride over 12 kilometers in height and 80 kilometers long, driven to thrilling speeds by gravitics. Olympus Mons ski trips are on hiatus due to the currently-in-flux climate, but the peak is expected to still get snow after terraforming.
The galaxy's third-largest hotel, with the fifth-largest indoor swimming pool attached. The Phobos Microgravity Playground, which despite its childish name is known for zero-gravity sports of all kinds. A place known simply as The Garden, a massive tiered arcology-like structure that is simultaneously park, arboretum, and farm.
Cam definitely can't ski. Or play sports, even in zero gravity. He will attend all three of the best museums and try the roller coaster and wander through The Garden.
The museum would like to know if they can have a few (dozen) replicas, please?
The rollercoaster is pretty great, and the rest of the theme park surrounding is very nice too.
The Garden is dozens of stories tall, lit by real incandescent light, fantastically varied, beautifully arranged, and attended to by an unobtrusive drone swarm. Cam is free to pick and eat anything in here straight off the bush/tree/ground if he likes. (The Gardeners would like some things for their gene bank, if he doesn't mind.)
That's nice of his guides and Cam appreciates it. The gene bank can have whatever it likes as long as it doesn't like viruses.
That's that for his three days of Martian tourist attractions. Shall we move on to spawning hundreds of gates per system to create a deeply interconnected galactic transport network?