synonymous words together

  1. The service at this hotel is disgusting and appalling.
  2. If you truly and really love me, you’ll reject your parents’ rejection of our marriage.
    Are these sentences OK?
    Cam I use two synonymous words together as in #1 like ‘disgusting and appalling’ and in
    #2 like ‘truly and really’?

They are OK, but the usual word order is “really and truly” (this is almost a set expression).