If you are toad-less and only visiting for the Elvis experience, Graceland RV is your best bet. The campground is part of the whole 'Elvis' compound, security is tight and every thing Elvis is within walking distance inside the compound. Only time you leave the compound is then you are on the shuttle bus that takes visitors across the street to Graceland. The staff even arranged for the pink Cadillac limo to take us from our site to a popular BBQ place and back again.
Nothing says 'tourist' like a pink limo.