Stayed at LV RV Resort Nellies Boulevard early end May this year and also the year before. We don't toad, and whilst the RV Resort was great and reasonably priced, walking to and from to Sam's Town was a little nerve wrecking, especially at night!! Used the Shuttle at Sams Town whilst staying there to get to the strip and back = worked OK for 3 days when we were generally waiting for an overseas relative arrival at McCarran to come in.
On the return trip to drop off at McCarran, we booked into Oasis LV for 3 nights, just off South side of Strip and now they are charging $12 for their shuttle per person per day return trip with very limited schedule, so we Ubered up and down the strip and did Freemont as well. That worked brilliantly.
With no relatives on board we prefer to boondock, so in the past we've stayed at the back of Bally's/Paris, but they now charge for parking, albeit we did once stay O/N there. However, right south on the strip is the South Pointe, and they have a dedicated area for trucks and RV's to stay O/N complimentary which we did for two nights and it was perfect, and felt way more comfortable walking around wise than Nellies Boulevard.
Like we said, very much enjoyed the Las Vegas RV Resort for pricing etc near Sam's town but felt very very uncomfortable walking around the sketchy area of Sams Town vicinity. Seeing some interesting folks, police checking vehicles often and people urinating on the main boulevard against the small trees. To each their own, and YMMV, just sharing our experience this May.
PS: We used Passport America for both stays at the Oasis Las Vegas, so the rate was much more reasonable than the rack rates - Mon to Thurs both times.