We've been camping for decades & for that hire price I would suggest buying your own stuff. This time of year onwards is a good time to find bargains.
We've had all kinds of tents over the years & now swear by teepees, having camped in serious storms a few times & had other tents fall apart, We'd never use anything now.
Our main tent is a 3m regatta teepee, easy & fast to put up, stands up to even gale force winds & will easy take 3 double or several single mattresses & my very tallDH can easily stand up in it. We have a smaller one for teen DD, but when she was younger, we used to fit in a single mattress fir her & a air sock sofa & food prep table & large cool box & still have space.
You need also
Good inflatable mattresses & a pump that works with your car
Foil insulation sheets to lay in the ground underneath the mattress, plus a sleeping bag or duvet to cover the mattress under the sheets... this is all for warmth in the night. Then just use fitted sheets, duvets & top with lots of blankets & pillows as normal... a good warm bed is the secret to enjoying camping
a camping stove & stand, we take a wok, wide frying as we can do pizza in that too & a saucepan & kettle. We find these cover all bases for cooking.
Foldable prep table, Chopping board, set of knives, bowls, Tin opener & other utensils you'd need to prep & cook food, folding wash up bowl
Enamelled Tin plates plate, bowls mugs etc... we found these in Poundland & they've lasted for years & are so easy to clean
A portable fire pit, you can both cook on this & use as a campfire for marshmallow roasting & keeping warm
Fold up comfy camping chairs
Air sock air bed/sofa
Picnic mat
Foldable water containers
Good quality cool box & a cool bag
Hanging bags... we put veg, crisps, etc in these & hang them up onto the central tent pole out
Blankets, fleeces etc to put over you all around the fire when it gets chillier at night
Lights, lots of lights to hang in the tent & torches etc to wander around outside. A head torch can be very useful. Solar fairy lights & post lights to decorate outside your tent & make it more visible to stop others tripping over your tent ropes in the dark
If you have a dog, you need a long tether too
Potty if you have small kids. Far better than waking them & dragging them screaming across a field to make them go to the toilet to avoid accidents & have them sob & scream to the rest of the campsite for the couples of ours as we've seen too often lately🥴
Joss sticks, especially lemongrass to keep mozzies etc away
Think I've remembered everything 