well what if you just want to go to a relatives wedding as i said i went to a cousins wedding and did exactly this, baby moniter and i and my parents took it in turns to go and check on ds4 and dd, they were fine, the wedding was a one of obviously! and dd was 6mths old by that point and i hadn had a night out or seen any of the relatives at the wedding for months! dd an dds4 wouldnt go to sleep in the pushchair with the party going on around them, i had a room close to the reception and my moniter worked, i checked it before hand, i also made sure the room was childfriendly.
thb dp and i rarely go out as we cant afford to and we are both generally too tired, dp works crazy hours! so when there is a wedding or something we will have saved up in advance for it, and it doesnt happen often (have been to 3 weddings in 12 yrs since having children) they are special and yes i do want to have a bit of an evening and have fun.
affording a hotel is not something that we can just do, esp not with 5 kids, its takes planning and just dp getting the time off work is a complete pita. and we do quite often have a meal at home once the kids are in bed, nice not NOT the same as going out and having someone serve you food and do the cleaning up afterwards, the feel, the atmosphere etc, we may be parents and our children do come first but hell yes we deserve some adult time and a bit of fun, so if that means using a hotel babysitter (once) or a baby moniter anothe time then i will do that.
you may not NEED to use your car to nip to the shop 5 mins up the road, but its raining and you dont want to get wet so you load you kids in the car and drive, then you have an accident, you could have walked and therefore woudlnt have had an accident?! that is MORE likely than all the scenarios here with the hotel, you do realise that? statistically most car crashes take place very close to home and on short journeys when you could probably have walked!! but lots of people do that everyday and think nothing of it!