A welcome pack is common but not universal. Where one is provided, it typically covers the basics such as a site map, a note of bin collection days, wifi details if the park offers it, and contact numbers for reception and out-of-hours emergencies. It is worth reading through on the first evening rather than leaving it in a drawer, since it usually answers the questions that come up later in the week.
Cleaning products, washing-up liquid and the odd bin bag are usually left for you to bring, along with anything specific to your visit such as nappies, pet food or a favourite brand of tea. Some parks leave a small welcome pack with a starter supply of tea, coffee and milk, but this tends to be a nice extra rather than something to plan around.
As with most logistics on a caravan self-catering holiday parks, the details differ park to park, so a quick check of your specific park's parking arrangement before you set off is the simplest way to avoid a fiddly first ten minutes on arrival.
Inside, look for a wet room or a shower with a level or low-threshold entry rather than a caravan with only a bath, wider doorways through to the bedroom and bathroom, and enough turning space in the bathroom itself to use it comfortably. Grab rails by the toilet and shower, and a bed at a workable height for transferring, are worth asking about specifically if they matter to you, since photographs on a booking page do not always show this level of detail.
Check the sleeping arrangement matches what you actually need. „Sleeps six“ can mean six proper beds, or it can mean two adults plus a sofa bed and a fold-down bunk for the rest. If you are travelling with a baby, a wheelchair user or an elderly relative, ask specifically how the extra spaces work and whether the layout suits you before you commit.
Extra charges for pets are common and usually modest, often a flat fee per dog per stay rather than a nightly rate, though this varies by park and by season. It should be shown at the booking stage, and if it is not obviously listed, it is worth asking before you pay rather than after you arrive.