David’s Bridal alterations

Just out of curiosity...

i bought my dress from Davids Bridal and was planning to have my alterations done there- simply because they alter dresses all the time and will also clean it for me. I’m afraid that if I take it elsewhere and it gets ruined, I’ll be out of luck. I’m also keeping in mind that it is expensive to have a wedding dress cleaned, so it may just be a wash anyway even if the alterations are cheaper.

My dress needs to be taken in from a size 8 to a size 6, bra cups added, and a simple bustle. Does anyone have any experience in what they may charge for these 3 things?

I guess I’m leaning more towards just having David’s do it just for peace of mind.