Or The Sims Vacation in simplified English

The expansion is very similar to Hot Date in which many game elements were revamped. With a new social interaction system, revised user interface, and a new vacation island area with additional sub lots. Whilst Hot Date introduced the concept of sims leaving their lots to go downtown, here sims can actually stay on these lots for an extended period of time, depending on how much money they have.

New interactions exclusive to On Holiday are released that allow sims to invite each other to play games based on the new objects added, like playing archery, volleyball or fishing. In addition, some of the new interactions from hot dates are added.
Holidays allow for sims to take a break from their schedule, as they are not required to work or go to school and dance sims in the first game have no concept of days off or weekends, this expansion allows sims to go off and do other stuff without having to worry about their jobs as they can stay on holiday indefinitely.
Vacation Island

There are three types of vacation lots available, each with a different environment:
- Beach Lots: Set on your typical beach/seaside, sims can sleep in a hotel located on the lot which will each have a bed and a bathroom. Sims can swim in these areas or play volleyball and can rent sandcastle kits.
- Forest Lots: Simulates a camping lot, here your sims are set near woodland and have the option to camp in a tent or rent a log cabin. These lots typically feature a campfire
- Snow Lots: Set on a Ski/Snow resort, Some lots have an igloo that your sims can sleep in
Each of the three environments has three different resorts that scale to accommodate the budget of the sims traveling there, there is a cheap resort that features only basic amenities, a moderate one that features a mix of both, and a more expensive one that resembles a hotel of sorts.
Sims will need to check in every day at 11:00AM in order to access and use most of the lot facilities. The game will do this automatically unless the sims check out.
Internally, houses 40 – 48 are used or the holiday lots.
NPCs
Whilst On Holiday, sims will encounter NPC sims that will also be on the same resort. These are like townies (Downtown NPCs) of sorts in that the player cannot control but they can be interacted with, and if your sim has a higher enough relationship they can move in. Some families will have an adult but one or more kids, who will also join the family.
This is convenient if you wanted your sim to marry and expand their family quickly without having to go through the baby raising process (Which is horrid in the first Sims)
There are also new NPCs
- Vacation Director Kana: Just walk around the lot relentlessly 24/7 with a clipboard, you have to admire her dedication. Your sim can ask her questions to find out more on the different features of the expansion.
- Mascots, there are three in total but only one will show up on a lot at a time. The mascot will vary based on the lot environment, beach lots will get the Marky Sharky mascot (If only they got the Marky Mark mascot instead. Berry Yeti is present on the Snow lots and Archie Archer is on the forest lots. They can only be interacted by kids. This makes them annoying since they will constantly try to play with the kid, even if they are busy.
- Janitor: Cleans up dirty items on the lot. They’re a bit too keen as they will immediately come and will sometimes block the doorway
Objects
A lot of these are intended for use on holiday lots, but can be used in the home buy mode catalog. As introduced in the Hot Date expansion, subcategories are introduced in buy mode which allows for better organization of custom objects.

KampRite Instant Campfire

Volleyball

Redwood Hot Tub
A hot tub that seats two sims, adults only. Very similar to the one introduced in Hot Date

Archery
Sims will earn tokens when they win, whih allows them to redeem prizes

Water Ballon Fort
Group activity where sims can throw water balloons

Snowboard Halfpipe
Sims seem to have problems skating without falling down

Polar Bear Rug
Wait until PETA sees this…

Snowman
Not a buyable object but sims can build their own snowmen on snowy lots

Snowball Fort
Same as the ballon fort but with snow

Snowslide
Sims can slide, SSX style
Carnival Games




Like the archery game, your sim can earn tokens with they can redeem into prizes. These then become souvenirs when they move back home, which they can display on a dedicated shelf.
Mac OS Version
The expansion was ported to Mac OS and OS X and install’s in the same fashion.