Choosing a concert lawn cup holder
Start with your seat, the surface and the venue rules. A freestanding base, chair holder and ground stake solve different problems.

A wider base for a suitable spot
Steadi suits a level, stationary spot with full support under its 5.2-inch footprint. It goes with compatible drinkware rather than fastening to a chair. That is useful when you have a good drink spot and want a wider base, but it does not flatten a hill or secure a drink to the ground.
A chair-mounted holder
A holder attached to a permitted chair keeps the drink near your seat and away from feet. Check its mounting dimensions, container limits and the chair’s stability. If you already have a suitable built-in holder, you may not need another accessory. A low-chair rule and a holder’s fit are separate checks.
A ground stake
A stake-style holder may be appropriate where the venue allows stakes and the ground accepts the product as instructed. Confirm insertion, supported container size and clearance around people. Do not assume all venues permit it or that hard ground will accept it.
A permitted table or tray
A small table provides space for more than one item when permitted and stable. A tray on uneven grass still follows the ground underneath; it is not automatically level. Check legs and support before adding drinks. A coaster protects or marks a surface but does not perform the same job as a gripping holder.
Choose the simplest setup that works
If you cannot find a level, supported spot, keep your drink in hand or use an appropriate permitted alternative. Decide the surface first, then measure the actual container. Steadi fits bases 2–3.15 inches across; the holder itself needs 5.2 inches of supported space.