paranoid !! help !!

So, I have booked reception hall, photo/video, and dj and have the contracts and have paid what is due so far. BUT I still have this urge to call and confirm that my date is still booked for my wedding even though I just booked with everything within the past three months and my wedding is over a year from now. I am less worried about reception hall I guess because I met with coordinator and stuff like that about a month later so I feel I am in their computer. Maybe I can come up with a question to ask the dj and the photo/video people and when i call they probably will look up my date and who i am before answering. Right ?

or should i just relax?

if i have the contracts and my vendors do not show what happens? i mean by then...i bet like what 4 months before.. i would have made another payment to my photo at 9 months before...and then some where by 4 -1 months before i would meet my teams (i am not worried or i woulda insisted on sooner) and my reception - the whole menu/detail meeting.. so i guess a few months before i will know if there are any problems !! right??