At Lone Rock Beach there is a sandy beach you can go to. Or on the Page side of the bridge is a dirt road down to a rocky beach.(more rocks than beach)At Antelope Point Marina is a cable driven wakeboard park.And a floating restaurant.
All the upper Antelope tours need to drive up the wash to get to the canyon. You can either start at an outfitters office in town, or drive to the entrance and wait for the next tour, that will drive you up the wash.
If you go to lower Antelope, you drive right up to the shack , pay your fees,and walk a short ways to enter the canyon with your guide.
Tours of Glen Canyon Dam are about 45 minutes, and cost $5. A bargain compared to Hoover Dam.($11 for the powerplant tour, and $30 for the more involved dam tour) Its also way less crowded than Hoover, but just as impressive.Hoover Dam has so many bus tours out of Vegas, that it is really a good idea to get there right when it opens. At Glen Canyon, not so much. It gets nowhere near the traffic.
Edited: 9:50 pm, June 12, 2013