Q1: Can this card's Your Turn effect not attack with that Digimon after it gives "Rush" to "Growlmon" or "Gallantmon"?
No, you cannot. ≪You must attack as much as possible with the Digimon that gave you the "rush".
Takato Matsuki BT19-080 R [Start of Your Turn] If you have 2 or less memory, set it to 3. [Your Turn] When any of your Digimon digivolve into a Digimon with [Growlmon] or [Gallantmon] in its name, by suspending this Tamer, that Digimon gains <Raid> for the turn. Then, that Digimon attacks a player. --- [Security] Play this card without paying the cost.
Takato Matsuki BT19-080 R [Start of Your Turn] If you have 2 or less memory, set it to 3. [Your Turn] When any of your Digimon digivolve into a Digimon with [Growlmon] or [Gallantmon] in its name, by suspending this Tamer, that Digimon gains <Raid> for the turn. Then, that Digimon attacks a player. --- [Security] Play this card without paying the cost.
松田啓人 BT19-080 R 【自分のターン開始時】メモリーが2以下なら、3にする。 【自分のターン】自分のデジモンが名称に「グラウモン」/「デュークモン」を含むデジモンに進化したとき、このテイマーをレストさせることで、ターン終了まで、そのデジモンは≪突進≫を得る。その後、そのデジモンでプレイヤーにアタックする。 --- 【セキュリティ】このカードをコストを支払わずに登場させる。